pandalib-util javadoc and small API changes

pandalib-core/src/main/java/fr/pandacube/lib/core/commands/SuggestionsSupplier.java

@@ -190,12 +190,12 @@ public interface SuggestionsSupplier<S> {
 
 
 	static <S> SuggestionsSupplier<S> suggestDuration() {
-		final List<String> emptyTokenSuggestions = TimeUtil.DURATION_SUFFIXES.stream().map(p -> "1" + p).collect(Collectors.toList());
+		final List<String> emptyTokenSuggestions = DURATION_SUFFIXES.stream().map(p -> "1" + p).collect(Collectors.toList());
 		return (s, ti, token, args) -> {
 			if (token.isEmpty()) {
 				return emptyTokenSuggestions;
 			}
-			List<String> remainingSuffixes = new ArrayList<>(TimeUtil.DURATION_SUFFIXES);
+			List<String> remainingSuffixes = new ArrayList<>(DURATION_SUFFIXES);
 			char[] tokenChars = token.toCharArray();
 			String accSuffix = "";
 			for (char c : tokenChars) {
@@ -215,6 +215,11 @@ public interface SuggestionsSupplier<S> {
 		};
 	}
 
+	/**
+	 * List of all possible duration unit symbols for suggestions.
+	 */
+	public static final List<String> DURATION_SUFFIXES = List.of("y", "mo", "w", "d", "h", "m", "s");
+
 
 	private static void scanAndRemovePastSuffixes(List<String> suffixes, String foundSuffix) {
 		for (int i = 0; i < suffixes.size(); i++) {

pandalib-paper/src/main/java/fr/pandacube/lib/paper/util/AABBBlock.java

@@ -88,9 +88,9 @@ public class AABBBlock implements Iterable<BlockVector> {
 	}
 	
 	public Vector getRandomPosition() {
-		double x = RandomUtil.nextDoubleBetween(pos1.getX(), pos2.getX());
+		double x = RandomUtil.rand.nextDouble(pos1.getX(), pos2.getX());
-		double y = RandomUtil.nextDoubleBetween(pos1.getY(), pos2.getY());
+		double y = RandomUtil.rand.nextDouble(pos1.getY(), pos2.getY());
-		double z = RandomUtil.nextDoubleBetween(pos1.getZ(), pos2.getZ());
+		double z = RandomUtil.rand.nextDouble(pos1.getZ(), pos2.getZ());
 		return new Vector(x, y, z);
 	}
 	

pandalib-paper/src/main/java/fr/pandacube/lib/paper/util/GameWorldUtils.java

@@ -73,7 +73,7 @@ public class GameWorldUtils implements Listener {
 		if (!new File(Bukkit.getWorldContainer(), world).isDirectory())
 			throw new IllegalStateException("GameWorld '"+world+"' does not exist");
 		
-		String copiedName = world + "_gen" + RandomUtil.nextIntBetween(100000, 999999);
+		String copiedName = world + "_gen" + RandomUtil.rand.nextInt(100000, 999999);
 		
 		File srcDir = new File(Bukkit.getWorldContainer(), world);
 		File destDir = new File(Bukkit.getWorldContainer(), copiedName);

pandalib-paper/src/main/java/fr/pandacube/lib/paper/util/LocationUtil.java

@@ -65,9 +65,9 @@ public class LocationUtil {
 			
 			// generate a random (x,z) coordinate
 			Location ret = new Location(w,
-					RandomUtil.nextIntBetween(min.getBlockX(), max.getBlockX()) + 0.5,
+					RandomUtil.rand.nextInt(min.getBlockX(), max.getBlockX()) + 0.5,
 					w.getMaxHeight() - 1,
-					RandomUtil.nextIntBetween(min.getBlockZ(), max.getBlockZ()) + 0.5);
+					RandomUtil.rand.nextInt(min.getBlockZ(), max.getBlockZ()) + 0.5);
 			
 			// find a secure y value
 			ret = getSecureLocationOrNull(ret);

pandalib-util/src/main/java/fr/pandacube/lib/util/AmountPerTimeLimiter.java

@@ -4,15 +4,82 @@ import java.util.ArrayList;
 import java.util.List;
 import java.util.stream.Collectors;
 
+/**
+ * Utility class to track and limit the amount of a specific value for a specified amount of duration.
+ *
+ * An exemple of application is for rolling expense limit of a debit card: you cannot expense more that {@code $X}
+ * during a rolling period of {@code $Y} time.
+ *
+ * Here is an example usage of this class:
+ * <pre>
+ *     AmountPerTimeLimiter instance = new AmountPerTimeLimiter(X, Y);
+ *     void tryExpense(double amount) {
+ *         if (instance.canAdd(amount)) {
+ *             // do the action (here, it’s the expense)
+ *             instance.add(amount);
+ *         }
+ *     }
+ * </pre>
+ */
 public class AmountPerTimeLimiter {
 	private final double maxAmount;
 	private final long duration;
 	
 	private List<Entry> entries = new ArrayList<>();
 
-	public AmountPerTimeLimiter(double a, long d) {
+	/**
-		maxAmount = a;
+	 * Create a new instance of {@link AmountPerTimeLimiter}
-		duration = d;
+	 * @param maximumAmount the maximum amount possible in the specified interval
+	 * @param timeInterval the interval in milliseconds
+	 */
+	public AmountPerTimeLimiter(double maximumAmount, long timeInterval) {
+		maxAmount = maximumAmount;
+		duration = timeInterval;
+	}
+
+
+	/**
+	 * Compute and returns the amount considered for the current time interval.
+	 * @return the amount considered.
+	 */
+	public synchronized double getAmountSinceDuration() {
+		long currT = System.currentTimeMillis();
+		entries = entries.stream()
+				.filter(e -> e.time > currT - duration)
+				.collect(Collectors.toList());
+				
+		return entries.stream()
+				.mapToDouble(e -> e.amount)
+				.sum();
+	}
+
+	/**
+	 * Register the provided amount into this limiter, at the current system time.
+	 * @param amount the amount added.
+	 */
+	public synchronized void add(double amount) {
+		long currT = System.currentTimeMillis();
+		if (!entries.isEmpty() && entries.get(entries.size()-1).time == currT)
+			entries.get(entries.size()-1).amount += amount;
+		else
+			entries.add(new Entry(currT, amount));
+	}
+
+	/**
+	 * Determine if the provided amount can be added into the limiter without exceeding the limit.
+	 * @param amount the amount to test.
+	 * @return if it’s possible to add that amount now.
+	 */
+	public boolean canAdd(double amount) {
+		return getAmountSinceDuration() + amount < maxAmount;
+	}
+
+	/**
+	 * Gets the amount that can be added right now into the limiter.
+	 * @return the maximum amount that can be added.
+	 */
+	public double getRemainingForNow() {
+		return Math.max(0, maxAmount - getAmountSinceDuration());
 	}
 
 
@@ -26,32 +93,4 @@ public class AmountPerTimeLimiter {
 			time = t; amount = a;
 		}
 	}
-	
-	
-	public synchronized double getAmountSinceDuration() {
-		long currT = System.currentTimeMillis();
-		entries = entries.stream()
-				.filter(e -> e.time > currT - duration)
-				.collect(Collectors.toList());
-				
-		return entries.stream()
-				.mapToDouble(e -> e.amount)
-				.sum();
-	}
-	
-	public synchronized void add(double amount) {
-		long currT = System.currentTimeMillis();
-		if (!entries.isEmpty() && entries.get(entries.size()-1).time > currT - 1000)
-			entries.get(entries.size()-1).amount += amount;
-		else
-			entries.add(new Entry(System.currentTimeMillis(), amount));
-	}
-	
-	public boolean canAdd(double amount) {
-		return getAmountSinceDuration() + amount < maxAmount;
-	}
-	
-	public double getRemainingForNow() {
-		return Math.max(0, maxAmount - getAmountSinceDuration());
-	}
 }

pandalib-util/src/main/java/fr/pandacube/lib/util/BiMap.java

@@ -9,23 +9,52 @@ import java.util.Set;
 import java.util.function.BiConsumer;
 import java.util.function.Supplier;
 
+/**
+ * A bi-direction map storing in a synchronized way a {@code forwardMap} that store the key to value mapping, and a
+ * {@code backwardMap} that store the value to key mapping.
+ * All the keys and value are always unique in this bi-directional map.
+ * @param <K> the type of the "key"
+ * @param <V> the type of the "value"
+ */
 public class BiMap<K, V> implements Iterable<Entry<K, V>> {
 
-    protected final Map<K, V> map;
+    /**
-    protected final Map<V, K> inversedMap;
+     * The backend forward map
+     */
+    protected final Map<K, V> forwardMap;
+
+    /**
+     * The backend bawkward map
+     */
+    protected final Map<V, K> backwardMap;
 
     private BiMap<V, K> reversedView = null;
 
+    private final Object lock;
+
+    /**
+     * Create a new bi-directional map
+     * @param mapSupplier a {@link Supplier} to create the two backend map.
+     */
     @SuppressWarnings("unchecked")
 	public BiMap(Supplier<Map<?, ?>> mapSupplier) {
-    	map = (Map<K, V>) mapSupplier.get();
+    	forwardMap = (Map<K, V>) mapSupplier.get();
-    	inversedMap = (Map<V, K>) mapSupplier.get();
+    	backwardMap = (Map<V, K>) mapSupplier.get();
+        lock = new Object();
     }
 
+    /**
+     * Create a new bi-directional map with {@link HashMap} as the two backend maps.
+     */
     public BiMap() {
     	this(HashMap::new);
 	}
 
+    /**
+     * Create a new bi-directional map with {@link HashMap} as the two backend maps, and filled with the provided source
+     * {@link Map}.
+     * @param source the source to fill the new {@link BiMap}.
+     */
     public BiMap(Map<K, V> source) {
     	this();
     	putAll(source);
@@ -35,90 +64,222 @@ public class BiMap<K, V> implements Iterable<Entry<K, V>> {
      * Only used for #reversedView()
      */
     private BiMap(BiMap<V, K> rev) {
-    	map = rev.inversedMap;
+    	forwardMap = rev.backwardMap;
-    	inversedMap = rev.map;
+    	backwardMap = rev.forwardMap;
+        lock = rev.lock;
     	reversedView = rev;
     }
 
-    public synchronized void put(K k, V v) {
+    /**
+     * Associate the provided key and value to each other in this bi-directional map.
+     * Since the {@link BiMap} cannot have duplicate keys or values: if a key is already present, the currently mapped
+     * value will be removed from the map. Also if a value is already present, the currently mapped key will also be
+     * removed.
+     * @param k the key.
+     * @param v the value.
+     */
+    public void put(K k, V v) {
+        synchronized (lock) {
             if (containsKey(k))
                 remove(k);
             if (containsValue(v))
                 removeValue(v);
-        map.put(k, v);
+            forwardMap.put(k, v);
-        inversedMap.put(v, k);
+            backwardMap.put(v, k);
-    }
-    
-    public synchronized void putAll(Map<? extends K, ? extends V> source) {
-    	for (Map.Entry<? extends K, ? extends V> e : source.entrySet()) {
-    		put(e.getKey(), e.getValue());
         }
     }
 
-    public synchronized V get(K k) {
+
-        return map.get(k);
+    /**
+     * Associate the provided key and value to each other in this bi-directional map.
+     * Since the {@link BiMap} cannot have duplicate keys or values: if a key is already present, the currently mapped
+     * value will be removed from the map. Also if a value is already present, the currently mapped key will also be
+     * removed.
+     * @param entry the entry with a key and value.
+     */
+    public void put(Entry<? extends K, ? extends V> entry) {
+        put(entry.getKey(), entry.getValue());
     }
 
-    public synchronized K getKey(V v) {
+    /**
-        return inversedMap.get(v);
+     * Put the content of the provided map into this bi-directional map.
+     * This methods will call the {@link #put(Entry)} method successively in the order of the provided Map’s iterator.
+     * @param source the source map.
+     */
+    public void putAll(Map<? extends K, ? extends V> source) {
+        synchronized (lock) {
+            source.entrySet().forEach(this::put);
+        }
     }
 
-    public synchronized boolean containsKey(K k) {
+    /**
-    	return map.containsKey(k);
+     * Gets the mapped value for the provided key.
+     * @param k the key.
+     * @return the value mapped with the key.
+     */
+    public V get(K k) {
+        synchronized (lock) {
+            return forwardMap.get(k);
+        }
     }
 
-    public synchronized boolean containsValue(V v) {
+    /**
-    	return inversedMap.containsKey(v);
+     * Gets the mapped key for the provided value.
+     * @param v the value.
+     * @return the key mapped with the value.
+     */
+    public K getKey(V v) {
+        synchronized (lock) {
+            return backwardMap.get(v);
+        }
     }
 
-    public synchronized V remove(K k) {
+    /**
-    	V v = map.remove(k);
+     * Tells if this {@link BiMap} contains the provided key.
-    	inversedMap.remove(v);
+     * @param k the key to test if it’s present.
+     * @return true if this bimap contains the provided key, false otherwise.
+     */
+    public boolean containsKey(K k) {
+        synchronized (lock) {
+            return forwardMap.containsKey(k);
+        }
+    }
+
+    /**
+     * Tells if this {@link BiMap} contains the provided value.
+     * @param v the value to test if it’s present.
+     * @return true if this bimap contains the provided value, false otherwise.
+     */
+    public boolean containsValue(V v) {
+        synchronized (lock) {
+            return backwardMap.containsKey(v);
+        }
+    }
+
+    /**
+     * Remove the mapping of the provided key from this map.
+     * The mapped value is also removed in the internal backward map.
+     * @param k the key whose mapping is to be removed from the map.
+     * @return the value that was mapped with the provided key.
+     */
+    public V remove(K k) {
+        synchronized (lock) {
+            V v = forwardMap.remove(k);
+            backwardMap.remove(v);
             return v;
         }
+    }
 
-    public synchronized K removeValue(V v) {
+    /**
-    	K k = inversedMap.remove(v);
+     * Remove the mapping of the provided value from this map.
-    	map.remove(k);
+     * The mapped key is also removed in the internal forward map.
+     * @param v the value whose mapping is to be removed from the map.
+     * @return the key that was mapped with the provided value.
+     */
+    public K removeValue(V v) {
+        synchronized (lock) {
+            K k = backwardMap.remove(v);
+            forwardMap.remove(k);
             return k;
         }
+    }
 
+    /**
+     * Returns an unmodifiable {@link Set} view of this map.
+     * It’s iteration order will depends on the implementation of the {@code forwardMap}.
+     * @return an unmodifiable {@link Set} view of this map.
+     * @see Map#entrySet()
+     */
+    public Set<Entry<K, V>> entrySet() {
+        return Collections.unmodifiableSet(forwardMap.entrySet());
+    }
+
+    /**
+     * Returns an iterator of this map.
+     * It’s iteration order will depends on the implementation of the {@code forwardMap}.
+     * @return an iterator of this map.
+     * @see Map#entrySet()
+     * @see Set#iterator()
+     */
     @Override
     public Iterator<Entry<K, V>> iterator() {
-    	return Collections.unmodifiableSet(map.entrySet()).iterator();
+    	return entrySet().iterator();
     }
 
+    /**
+     * Returns an unmodifiable {@link Set} view of the keys contained in this map.
+     * It’s iteration order will depends on the implementation of the {@code forwardMap}’s key set.
+     * @return an unmodifiable {@link Set} view of the keys contained in this map.
+     * @see Map#keySet()
+     */
     public Set<K> keySet() {
-    	return Collections.unmodifiableSet(map.keySet());
+    	return Collections.unmodifiableSet(forwardMap.keySet());
     }
 
+    /**
+     * Returns an unmodifiable {@link Set} view of the values contained in this map.
+     * It’s iteration order will depends on the implementation of the {@code backwardMap}’s key set.
+     * @return an unmodifiable {@link Set} view of the values contained in this map.
+     * @see Map#keySet()
+     */
     public Set<V> valuesSet() {
-    	return Collections.unmodifiableSet(inversedMap.keySet());
+    	return Collections.unmodifiableSet(backwardMap.keySet());
     }
 
+    /**
+     * Returns an unmodifiable {@link Map} view of the {@code forwardMap} of this bi-directional map.
+     * It’s iteration order will depends on the implementation of the {@code forwardMap}.
+     * @return an unmodifiable {@link Map} view of the {@code forwardMap} of this bi-directional map.
+     */
     public Map<K, V> asMap() {
-    	return Collections.unmodifiableMap(map);
+    	return Collections.unmodifiableMap(forwardMap);
     }
 
+    /**
+     * Create a reversed view of this bi-directional map.
+     * Since the returned {@link BiMap} is a view of this {@link BiMap}, any change to either of those will affect both
+     * of them. Also, calling {@code bimap.reversedView().reversedView()} will return the original instance
+     * {@code bimap} since calling this method will cache each map into the respective reversed view.
+     * @return the reversed view of this {@link BiMap}.
+     */
     public BiMap<V, K> reversedView() {
+        synchronized (lock) {
             if (reversedView == null)
                 reversedView = new BiMap<>(this);
             return reversedView;
         }
+    }
 
-    public synchronized void forEach(BiConsumer<K, V> c) {
+    /**
-    	for(Entry<K, V> entry : this) {
+     * Performs the provided action for each entry of this map, following the iteration order of the internal {@code forwardMap}.
-    		c.accept(entry.getKey(), entry.getValue());
+     * @param action the action to perform on each entry.
+     * @see Map#forEach(BiConsumer)
+     */
+    public void forEach(BiConsumer<K, V> action) {
+        synchronized (lock) {
+            forwardMap.forEach(action);
         }
     }
 
+    /**
+     * Returns the number of key-value mapping in this map.
+     * @return the number of key-value mapping in this map.
+     * @see Map#size()
+     */
     public int size() {
-    	return map.size();
+        synchronized (lock) {
+            return forwardMap.size();
+        }
     }
 
-    public synchronized void clear() {
+    /**
-    	map.clear();
+     * Removes all the mapping from this map.
-    	inversedMap.clear();
+     */
+    public void clear() {
+        synchronized (lock) {
+            forwardMap.clear();
+            backwardMap.clear();
+        }
     }
     
 

pandalib-util/src/main/java/fr/pandacube/lib/util/CronExpression.java

@@ -1,629 +0,0 @@
-package fr.pandacube.lib.util;
-
-// from https://github.com/frode-carlsen/cron/blob/master/java8/src/main/java/fc/cron/CronExpression.java
-
-// if there are changes, indicate them here (there is none currently)
-
-/*
- * Copyright (C) 2012- Frode Carlsen.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * Note: rewritten to standard Java 8 DateTime by zemiak (c) 2016
- */
-import java.time.DayOfWeek;
-import java.time.Duration;
-import java.time.LocalDate;
-import java.time.LocalDateTime;
-import java.time.YearMonth;
-import java.time.ZoneId;
-import java.time.ZonedDateTime;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Collections;
-import java.util.List;
-import java.util.Locale;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
-
-/**
- * This provides cron support for java8 using java-time.
- * <P>
- * 
- * Parser for unix-like cron expressions: Cron expressions allow specifying combinations of criteria for time
- * such as: &quot;Each Monday-Friday at 08:00&quot; or &quot;Every last friday of the month at 01:30&quot;
- * <p>
- * A cron expressions consists of 5 or 6 mandatory fields (seconds may be omitted) separated by space. <br>
- * These are:
- *
- * <table>
- * <caption>CRON fields</caption>
- * <tr>
- * <th>Field</th>
- * <th>Allowable values</th>
- * <th>Special Characters</th>
- * </tr>
- * <tr>
- * <td><code>Seconds (may be omitted)</code></td>
- * <td><code>0-59</code></td>
- * <td><code>, - * /</code></td>
- * </tr>
- * <tr>
- * <td><code>Minutes</code></td>
- * <td><code>0-59</code></td>
- * <td><code>, - * /</code></td>
- * </tr>
- * <tr>
- * <td><code>Hours</code></td>
- * <td><code>0-23</code></td>
- * <td><code>, - * /</code></td>
- * </tr>
- * <tr>
- * <td><code>Day of month</code></td>
- * <td><code>1-31</code></td>
- * <td><code>, - * ? / L W</code></td>
- * </tr>
- * <tr>
- * <td><code>Month</code></td>
- * <td><code>1-12 or JAN-DEC (note: english abbreviations)</code></td>
- * <td><code>, - * /</code></td>
- * </tr>
- * <tr>
- * <td><code>Day of week</code></td>
- * <td><code>1-7 or MON-SUN (note: english abbreviations)</code></td>
- * <td><code>, - * ? / L #</code></td>
- * </tr>
- * </table>
- *
- * <P>
- * '*' Can be used in all fields and means 'for all values'. E.g. &quot;*&quot; in minutes, means 'for all minutes'
- * <P>
- * '?' Can be used in Day-of-month and Day-of-week fields. Used to signify 'no special value'. It is used when one want
- * to specify something for one of those two fields, but not the other.
- * <P>
- * '-' Used to specify a time interval. E.g. &quot;10-12&quot; in Hours field means 'for hours 10, 11 and 12'
- * <P>
- * ',' Used to specify multiple values for a field. E.g. &quot;MON,WED,FRI&quot; in Day-of-week field means &quot;for
- * monday, wednesday and friday&quot;
- * <P>
- * '/' Used to specify increments. E.g. &quot;0/15&quot; in Seconds field means &quot;for seconds 0, 15, 30, ad
- * 45&quot;. And &quot;5/15&quot; in seconds field means &quot;for seconds 5, 20, 35, and 50&quot;. If '*' s specified
- * before '/' it is the same as saying it starts at 0. For every field there's a list of values that can be turned on or
- * off. For Seconds and Minutes these range from 0-59. For Hours from 0 to 23, For Day-of-month it's 1 to 31, For Months
- * 1 to 12. &quot;/&quot; character helsp turn some of these values back on. Thus &quot;7/6&quot; in Months field
- * specify just Month 7. It doesn't turn on every 6 month following, since cron fields never roll over
- * <P>
- * 'L' Can be used on Day-of-month and Day-of-week fields. It signifies last day of the set of allowed values. In
- * Day-of-month field it's the last day of the month (e.g.. 31 jan, 28 feb (29 in leap years), 31 march, etc.). In
- * Day-of-week field it's Sunday. If there's a prefix, this will be subtracted (5L in Day-of-month means 5 days before
- * last day of Month: 26 jan, 23 feb, etc.)
- * <P>
- * 'W' Can be specified in Day-of-Month field. It specifies closest weekday (monday-friday). Holidays are not accounted
- * for. &quot;15W&quot; in Day-of-Month field means 'closest weekday to 15 i in given month'. If the 15th is a Saturday,
- * it gives Friday. If 15th is a Sunday, the it gives following Monday.
- * <P>
- * '#' Can be used in Day-of-Week field. For example: &quot;5#3&quot; means 'third friday in month' (day 5 = friday, #3
- * - the third). If the day does not exist (e.g. &quot;5#5&quot; - 5th friday of month) and there aren't 5 fridays in
- * the month, then it won't match until the next month with 5 fridays.
- * <P>
- * <b>Case-sensitive</b> No fields are case-sensitive
- * <P>
- * <b>Dependencies between fields</b> Fields are always evaluated independently, but the expression doesn't match until
- * the constraints of each field are met. Overlap of intervals are not allowed. That is: for
- * Day-of-week field &quot;FRI-MON&quot; is invalid,but &quot;FRI-SUN,MON&quot; is valid
- *
- */
-public class CronExpression {
-
-    enum CronFieldType {
-        SECOND(0, 59, null) {
-            @Override
-            int getValue(ZonedDateTime dateTime) {
-                return dateTime.getSecond();
-            }
-
-            @Override
-            ZonedDateTime setValue(ZonedDateTime dateTime, int value) {
-                return dateTime.withSecond(value).withNano(0);
-            }
-
-            @Override
-            ZonedDateTime overflow(ZonedDateTime dateTime) {
-                return dateTime.plusMinutes(1).withSecond(0).withNano(0);
-            }
-        },
-        MINUTE(0, 59, null) {
-            @Override
-            int getValue(ZonedDateTime dateTime) {
-                return dateTime.getMinute();
-            }
-
-            @Override
-            ZonedDateTime setValue(ZonedDateTime dateTime, int value) {
-                return dateTime.withMinute(value).withSecond(0).withNano(0);
-            }
-
-            @Override
-            ZonedDateTime overflow(ZonedDateTime dateTime) {
-                return dateTime.plusHours(1).withMinute(0).withSecond(0).withNano(0);
-            }
-        },
-        HOUR(0, 23, null) {
-            @Override
-            int getValue(ZonedDateTime dateTime) {
-                return dateTime.getHour();
-            }
-
-            @Override
-            ZonedDateTime setValue(ZonedDateTime dateTime, int value) {
-                return dateTime.withHour(value).withMinute(0).withSecond(0).withNano(0);
-            }
-
-            @Override
-            ZonedDateTime overflow(ZonedDateTime dateTime) {
-                return dateTime.plusDays(1).withHour(0).withMinute(0).withSecond(0).withNano(0);
-            }
-        },
-        DAY_OF_MONTH(1, 31, null) {
-            @Override
-            int getValue(ZonedDateTime dateTime) {
-                return dateTime.getDayOfMonth();
-            }
-
-            @Override
-            ZonedDateTime setValue(ZonedDateTime dateTime, int value) {
-                return dateTime.withDayOfMonth(value).withHour(0).withMinute(0).withSecond(0).withNano(0);
-            }
-
-            @Override
-            ZonedDateTime overflow(ZonedDateTime dateTime) {
-                return dateTime.plusMonths(1).withDayOfMonth(0).withHour(0).withMinute(0).withSecond(0).withNano(0);
-            }
-        },
-        MONTH(1, 12,
-                Arrays.asList("JAN", "FEB", "MAR", "APR", "MAY", "JUN", "JUL", "AUG", "SEP", "OCT", "NOV", "DEC")) {
-            @Override
-            int getValue(ZonedDateTime dateTime) {
-                return dateTime.getMonthValue();
-            }
-
-            @Override
-            ZonedDateTime setValue(ZonedDateTime dateTime, int value) {
-                return dateTime.withMonth(value).withDayOfMonth(1).withHour(0).withMinute(0).withSecond(0).withNano(0);
-            }
-
-            @Override
-            ZonedDateTime overflow(ZonedDateTime dateTime) {
-                return dateTime.plusYears(1).withMonth(1).withHour(0).withDayOfMonth(1).withMinute(0).withSecond(0).withNano(0);
-            }
-        },
-        DAY_OF_WEEK(1, 7, Arrays.asList("MON", "TUE", "WED", "THU", "FRI", "SAT", "SUN")) {
-            @Override
-            int getValue(ZonedDateTime dateTime) {
-                return dateTime.getDayOfWeek().getValue();
-            }
-
-            @Override
-            ZonedDateTime setValue(ZonedDateTime dateTime, int value) {
-                throw new UnsupportedOperationException();
-            }
-
-            @Override
-            ZonedDateTime overflow(ZonedDateTime dateTime) {
-                throw new UnsupportedOperationException();
-            }
-        };
-
-        final int from, to;
-        final List<String> names;
-
-        CronFieldType(int from, int to, List<String> names) {
-            this.from = from;
-            this.to = to;
-            this.names = names;
-        }
-
-        /**
-         * @param dateTime {@link ZonedDateTime} instance
-         * @return The field time or date value from {@code dateTime}
-         */
-        abstract int getValue(ZonedDateTime dateTime);
-
-        /**
-         * @param dateTime Initial {@link ZonedDateTime} instance to use
-         * @param value    to set for this field in {@code dateTime}
-         * @return {@link ZonedDateTime} with {@code value} set for this field and all smaller fields cleared
-         */
-        abstract ZonedDateTime setValue(ZonedDateTime dateTime, int value);
-
-        /**
-         * Handle when this field overflows and the next higher field should be incremented
-         *
-         * @param dateTime Initial {@link ZonedDateTime} instance to use
-         * @return {@link ZonedDateTime} with the next greater field incremented and all smaller fields cleared
-         */
-        abstract ZonedDateTime overflow(ZonedDateTime dateTime);
-    }
-
-    private final String expr;
-    private final SimpleField secondField;
-    private final SimpleField minuteField;
-    private final SimpleField hourField;
-    private final DayOfWeekField dayOfWeekField;
-    private final SimpleField monthField;
-    private final DayOfMonthField dayOfMonthField;
-
-    public CronExpression(final String expr) {
-        this(expr, true);
-    }
-
-    public CronExpression(final String expr, final boolean withSeconds) {
-        if (expr == null) {
-            throw new IllegalArgumentException("expr is null"); //$NON-NLS-1$
-        }
-
-        this.expr = expr;
-
-        final int expectedParts = withSeconds ? 6 : 5;
-        final String[] parts = expr.split("\\s+"); //$NON-NLS-1$
-        if (parts.length != expectedParts) {
-            throw new IllegalArgumentException(String.format("Invalid cron expression [%s], expected %s field, got %s", expr, expectedParts, parts.length));
-        }
-
-        int ix = withSeconds ? 1 : 0;
-        this.secondField = new SimpleField(CronFieldType.SECOND, withSeconds ? parts[0] : "0");
-        this.minuteField = new SimpleField(CronFieldType.MINUTE, parts[ix++]);
-        this.hourField = new SimpleField(CronFieldType.HOUR, parts[ix++]);
-        this.dayOfMonthField = new DayOfMonthField(parts[ix++]);
-        this.monthField = new SimpleField(CronFieldType.MONTH, parts[ix++]);
-        this.dayOfWeekField = new DayOfWeekField(parts[ix]);
-    }
-
-    public static CronExpression create(final String expr) {
-        return new CronExpression(expr, true);
-    }
-
-    public static CronExpression createWithoutSeconds(final String expr) {
-        return new CronExpression(expr, false);
-    }
-
-    public ZonedDateTime nextTimeAfter(ZonedDateTime afterTime) {
-        // will search for the next time within the next 4 years. If there is no
-        // time matching, an InvalidArgumentException will be thrown (it is very
-        // likely that the cron expression is invalid, like the February 30th).
-        return nextTimeAfter(afterTime, afterTime.plusYears(4));
-    }
-
-    public LocalDateTime nextLocalDateTimeAfter(LocalDateTime dateTime) {
-        return nextTimeAfter(ZonedDateTime.of(dateTime, ZoneId.systemDefault())).toLocalDateTime();
-    }
-    
-    public ZonedDateTime nextTimeAfter(ZonedDateTime afterTime, long durationInMillis) {
-        // will search for the next time within the next durationInMillis
-        // millisecond. Be aware that the duration is specified in millis,
-        // but in fact the limit is checked on a day-to-day basis.
-        return nextTimeAfter(afterTime, afterTime.plus(Duration.ofMillis(durationInMillis)));
-    }
-
-    public ZonedDateTime nextTimeAfter(ZonedDateTime afterTime, ZonedDateTime dateTimeBarrier) {
-        ZonedDateTime[] nextDateTime = { afterTime.plusSeconds(1).withNano(0) };
-
-        while (true) {
-            checkIfDateTimeBarrierIsReached(nextDateTime[0], dateTimeBarrier);
-            if (!monthField.nextMatch(nextDateTime)) {
-                continue;
-            }
-            if (!findDay(nextDateTime)) {
-                continue;
-            }
-            if (!hourField.nextMatch(nextDateTime)) {
-                continue;
-            }
-            if (!minuteField.nextMatch(nextDateTime)) {
-                continue;
-            }
-            if (!secondField.nextMatch(nextDateTime)) {
-                continue;
-            }
-
-            checkIfDateTimeBarrierIsReached(nextDateTime[0], dateTimeBarrier);
-            return nextDateTime[0];
-        }
-    }
-
-    /**
-     * Find the next match for the day field.
-     * <p>
-     * This is handled different than all other fields because there are two ways to describe the day and it is easier
-     * to handle them together in the same method.
-     *
-     * @param dateTime        Initial {@link ZonedDateTime} instance to start from
-     * @return {@code true} if a match was found for this field or {@code false} if the field overflowed
-     * @see SimpleField#nextMatch(ZonedDateTime[])
-     */
-    private boolean findDay(ZonedDateTime[] dateTime) {
-        int month = dateTime[0].getMonthValue();
-
-            while (!(dayOfMonthField.matches(dateTime[0].toLocalDate())
-                    && dayOfWeekField.matches(dateTime[0].toLocalDate()))) {
-                dateTime[0] = dateTime[0].plusDays(1).withHour(0).withMinute(0).withSecond(0).withNano(0);
-                if (dateTime[0].getMonthValue() != month) {
-                    return false;
-                }
-            }
-            return true;
-    }
-
-    private static void checkIfDateTimeBarrierIsReached(ZonedDateTime nextTime, ZonedDateTime dateTimeBarrier) {
-        if (nextTime.isAfter(dateTimeBarrier)) {
-            throw new IllegalArgumentException("No next execution time could be determined that is before the limit of " + dateTimeBarrier);
-        }
-    }
-
-    @Override
-    public String toString() {
-        return getClass().getSimpleName() + "<" + expr + ">";
-    }
-
-    static class FieldPart implements Comparable<FieldPart> {
-        private int from = -1, to = -1, increment = -1;
-        private String modifier, incrementModifier;
-
-        @Override
-        public int compareTo(FieldPart o) {
-            return Integer.compare(from, o.from);
-        }
-    }
-
-    abstract static class BasicField {
-        @SuppressWarnings({"RegExpRepeatedSpace", "RegExpSimplifiable", "RegExpSingleCharAlternation", "RegExpRedundantEscape"})
-        private static final Pattern CRON_FIELD_REGEXP = Pattern
-                .compile("""
-                                (?:                                             # start of group 1
-                                   (?:(?<all>\\*)|(?<ignore>\\?)|(?<last>L))  # global flag (L, ?, *)
-                                 | (?<start>[0-9]{1,2}|[a-z]{3,3})              # or start number or symbol
-                                      (?:                                        # start of group 2
-                                         (?<mod>L|W)                             # modifier (L,W)
-                                       | -(?<end>[0-9]{1,2}|[a-z]{3,3})        # or end nummer or symbol (in range)
-                                      )?                                         # end of group 2
-                                )                                              # end of group 1
-                                (?:(?<incmod>/|\\#)(?<inc>[0-9]{1,7}))?        # increment and increment modifier (/ or \\#)
-                                """,
-                        Pattern.CASE_INSENSITIVE | Pattern.COMMENTS);
-
-        final CronFieldType fieldType;
-        final List<FieldPart> parts = new ArrayList<>();
-
-        private BasicField(CronFieldType fieldType, String fieldExpr) {
-            this.fieldType = fieldType;
-            parse(fieldExpr);
-        }
-
-        private void parse(String fieldExpr) { // NOSONAR
-            String[] rangeParts = fieldExpr.split(",");
-            for (String rangePart : rangeParts) {
-                Matcher m = CRON_FIELD_REGEXP.matcher(rangePart);
-                if (!m.matches()) {
-                    throw new IllegalArgumentException("Invalid cron field '" + rangePart + "' for field [" + fieldType + "]");
-                }
-                String startNummer = m.group("start");
-                String modifier = m.group("mod");
-                String sluttNummer = m.group("end");
-                String incrementModifier = m.group("incmod");
-                String increment = m.group("inc");
-
-                FieldPart part = new FieldPart();
-                part.increment = 999;
-                if (startNummer != null) {
-                    part.from = mapValue(startNummer);
-                    part.modifier = modifier;
-                    if (sluttNummer != null) {
-                        part.to = mapValue(sluttNummer);
-                        part.increment = 1;
-                    } else if (increment != null) {
-                        part.to = fieldType.to;
-                    } else {
-                        part.to = part.from;
-                    }
-                } else if (m.group("all") != null) {
-                    part.from = fieldType.from;
-                    part.to = fieldType.to;
-                    part.increment = 1;
-                } else if (m.group("ignore") != null) {
-                    part.modifier = m.group("ignore");
-                } else if (m.group("last") != null) {
-                    part.modifier = m.group("last");
-                } else {
-                    throw new IllegalArgumentException("Invalid cron part: " + rangePart);
-                }
-
-                if (increment != null) {
-                    part.incrementModifier = incrementModifier;
-                    part.increment = Integer.parseInt(increment);
-                }
-
-                validateRange(part);
-                validatePart(part);
-                parts.add(part);
-            }
-
-            Collections.sort(parts);
-        }
-
-        protected void validatePart(FieldPart part) {
-            if (part.modifier != null) {
-                throw new IllegalArgumentException(String.format("Invalid modifier [%s]", part.modifier));
-            } else if (part.incrementModifier != null && !"/".equals(part.incrementModifier)) {
-                throw new IllegalArgumentException(String.format("Invalid increment modifier [%s]", part.incrementModifier));
-            }
-        }
-
-        private void validateRange(FieldPart part) {
-            if ((part.from != -1 && part.from < fieldType.from) || (part.to != -1 && part.to > fieldType.to)) {
-                throw new IllegalArgumentException(String.format("Invalid interval [%s-%s], must be %s<=_<=%s", part.from, part.to, fieldType.from,
-                        fieldType.to));
-            } else if (part.from != -1 && part.to != -1 && part.from > part.to) {
-                throw new IllegalArgumentException(
-                        String.format(
-                                "Invalid interval [%s-%s].  Rolling periods are not supported (ex. 5-1, only 1-5) since this won't give a deterministic result. Must be %s<=_<=%s",
-                                part.from, part.to, fieldType.from, fieldType.to));
-            }
-        }
-
-        protected int mapValue(String value) {
-            int idx;
-            if (fieldType.names != null && (idx = fieldType.names.indexOf(value.toUpperCase(Locale.getDefault()))) >= 0) {
-                return idx + fieldType.from;
-            }
-            return Integer.parseInt(value);
-        }
-
-        protected boolean matches(int val, FieldPart part) {
-            return val >= part.from && val <= part.to && (val - part.from) % part.increment == 0;
-        }
-
-        protected int nextMatch(int val, FieldPart part) {
-            if (val > part.to) {
-                return -1;
-            }
-            int nextPotential = Math.max(val, part.from);
-            if (part.increment == 1 || nextPotential == part.from) {
-                return nextPotential;
-            }
-
-            int remainder = ((nextPotential - part.from) % part.increment);
-            if (remainder != 0) {
-                nextPotential += part.increment - remainder;
-            }
-
-            return nextPotential <= part.to ? nextPotential : -1;
-        }
-    }
-
-    static class SimpleField extends BasicField {
-        SimpleField(CronFieldType fieldType, String fieldExpr) {
-            super(fieldType, fieldExpr);
-        }
-
-        /**
-         * Find the next match for this field. If a match cannot be found force an overflow and increase the next
-         * greatest field.
-         *
-         * @param dateTime {@link ZonedDateTime} array so the reference can be modified
-         * @return {@code true} if a match was found for this field or {@code false} if the field overflowed
-         */
-        protected boolean nextMatch(ZonedDateTime[] dateTime) {
-            int value = fieldType.getValue(dateTime[0]);
-
-            for (FieldPart part : parts) {
-                int nextMatch = nextMatch(value, part);
-                if (nextMatch > -1) {
-                    if (nextMatch != value) {
-                        dateTime[0] = fieldType.setValue(dateTime[0], nextMatch);
-                    }
-                    return true;
-                }
-            }
-
-            dateTime[0] = fieldType.overflow(dateTime[0]);
-            return false;
-        }
-    }
-
-    static class DayOfWeekField extends BasicField {
-
-        DayOfWeekField(String fieldExpr) {
-            super(CronFieldType.DAY_OF_WEEK, fieldExpr);
-        }
-
-        boolean matches(LocalDate dato) {
-            for (FieldPart part : parts) {
-                if ("L".equals(part.modifier)) {
-                    YearMonth ym = YearMonth.of(dato.getYear(), dato.getMonth().getValue());
-                    return dato.getDayOfWeek() == DayOfWeek.of(part.from) && dato.getDayOfMonth() > (ym.lengthOfMonth() - 7);
-                } else if ("#".equals(part.incrementModifier)) {
-                    if (dato.getDayOfWeek() == DayOfWeek.of(part.from)) {
-                        int num = dato.getDayOfMonth() / 7;
-                        return part.increment == (dato.getDayOfMonth() % 7 == 0 ? num : num + 1);
-                    }
-                    return false;
-                } else if (matches(dato.getDayOfWeek().getValue(), part)) {
-                    return true;
-                }
-            }
-            return false;
-        }
-
-        @Override
-        protected int mapValue(String value) {
-            // Use 1-7 for weedays, but 0 will also represent sunday (linux practice)
-            return "0".equals(value) ? 7 : super.mapValue(value);
-        }
-
-        @Override
-        protected boolean matches(int val, FieldPart part) {
-            return "?".equals(part.modifier) || super.matches(val, part);
-        }
-
-        @Override
-        protected void validatePart(FieldPart part) {
-            if (part.modifier != null && !Arrays.asList("L", "?").contains(part.modifier)) {
-                throw new IllegalArgumentException(String.format("Invalid modifier [%s]", part.modifier));
-            } else if (part.incrementModifier != null && !Arrays.asList("/", "#").contains(part.incrementModifier)) {
-                throw new IllegalArgumentException(String.format("Invalid increment modifier [%s]", part.incrementModifier));
-            }
-        }
-    }
-
-    static class DayOfMonthField extends BasicField {
-        DayOfMonthField(String fieldExpr) {
-            super(CronFieldType.DAY_OF_MONTH, fieldExpr);
-        }
-
-        boolean matches(LocalDate dato) {
-            for (FieldPart part : parts) {
-                if ("L".equals(part.modifier)) {
-                    YearMonth ym = YearMonth.of(dato.getYear(), dato.getMonth().getValue());
-                    return dato.getDayOfMonth() == (ym.lengthOfMonth() - (part.from == -1 ? 0 : part.from));
-                } else if ("W".equals(part.modifier)) {
-                    if (dato.getDayOfWeek().getValue() <= 5) {
-                        if (dato.getDayOfMonth() == part.from) {
-                            return true;
-                        } else if (dato.getDayOfWeek().getValue() == 5) {
-                            return dato.plusDays(1).getDayOfMonth() == part.from;
-                        } else if (dato.getDayOfWeek().getValue() == 1) {
-                            return dato.minusDays(1).getDayOfMonth() == part.from;
-                        }
-                    }
-                } else if (matches(dato.getDayOfMonth(), part)) {
-                    return true;
-                }
-            }
-            return false;
-        }
-
-        @Override
-        protected void validatePart(FieldPart part) {
-            if (part.modifier != null && !Arrays.asList("L", "W", "?").contains(part.modifier)) {
-                throw new IllegalArgumentException(String.format("Invalid modifier [%s]", part.modifier));
-            } else if (part.incrementModifier != null && !"/".equals(part.incrementModifier)) {
-                throw new IllegalArgumentException(String.format("Invalid increment modifier [%s]", part.incrementModifier));
-            }
-        }
-
-        @Override
-        protected boolean matches(int val, FieldPart part) {
-            return "?".equals(part.modifier) || super.matches(val, part);
-        }
-    }
-}

pandalib-util/src/main/java/fr/pandacube/lib/util/DistanceUtil.java

@@ -3,8 +3,19 @@ package fr.pandacube.lib.util;
 import java.text.DecimalFormat;
 import java.util.Arrays;
 
+/**
+ * This class contains various methods to manipulate and display distances.
+ */
 public class DistanceUtil {
 
+	/**
+	 * Generate a string representation of the provided distance, with a specific decimal precision and one of the
+	 * specified metric prefix
+	 * @param meterDist the distance to display, in meter
+	 * @param precision the number of digit to display after the decimal separator
+	 * @param desiredUnits the prefered unit prefix to use for convertion.
+	 * @return a string representation of the provided distance
+	 */
 	public static String distanceToString(double meterDist, int precision, DistanceUnit... desiredUnits) {
 
 		Arrays.sort(desiredUnits);
@@ -28,20 +39,64 @@ public class DistanceUtil {
 		return df.format(dist) + choosenUnit.unitStr;
 	}
 
+	/**
+	 *
+	 * Generate a string representation of the provided distance, with a specific decimal precision, and using either
+	 * {@code km} or {@code m} as a unit.
+	 * <p>
+	 * Calling this method is equivalent to {@code distanceToString(meterDist, precision, DistanceUnit.M, DistanceUnit.KM)}.
+	 * @param meterDist the distance to display, in meter
+	 * @param precision the number of digit to display after the decimal separator
+	 * @return a string representation of the provided distance
+	 */
 	public static String distanceToString(double meterDist, int precision) {
 		return distanceToString(meterDist, precision, DistanceUnit.M, DistanceUnit.KM);
 	}
 
+	/**
+	 * Enumeration of comonly used distance metric unit
+	 */
 	public enum DistanceUnit {
+
+		/**
+		 * Nanometer unit. One billionth of a meter. 10<sup>-9</sup> = 0.000000001m.
+		 */
 		NM(0.000000001, "nm"),
+
+		/**
+		 * Micrometer unit. One millionth of a meter. 10<sup>-6</sup> = 0.000001m.
+		 */
 		UM(0.000001, "µm"),
+
+		/**
+		 * Millimeter unit. One thousandth of a meter. 10<sup>-3</sup> = 0.001m.
+		 */
 		MM(0.001, "mm"),
+
+		/**
+		 * Centimeter unit. One hundredth of a meter. 10<sup>-2</sup> = 0.01m
+		 */
 		CM(0.01, "cm"),
+
+		/**
+		 * Meter unit. One meter. 10<sup>0</sup> = 1m.
+		 */
 		M(1, "m"),
+
+		/**
+		 * Kilometer unit. One thousand meter. 10<sup>3</sup> = 1000m.
+		 */
 		KM(1000, "km");
 
-		private final double multiplicator;
+		/**
-		private final String unitStr;
+		 * The value of this unit in meter.
+		 */
+		public final double multiplicator;
+
+		/**
+		 * String representation of the unit symbol.
+		 */
+		public final String unitStr;
 
 		DistanceUnit(double mult, String s) {
 			multiplicator = mult;

pandalib-util/src/main/java/fr/pandacube/lib/util/EnumUtil.java

@@ -3,6 +3,9 @@ package fr.pandacube.lib.util;
 import java.util.Arrays;
 import java.util.stream.Collectors;
 
+/**
+ * This class provides methods for manipulating enums.
+ */
 public class EnumUtil {
 
 	/**
@@ -11,6 +14,7 @@ public class EnumUtil {
 	 * @param enumType the enum class.
 	 * @param separator a string which will be used as a separator
 	 * @return a string representation of the enum class.
+	 * @param <T> the type of the enum.
 	 */
 	public static <T extends Enum<T>> String enumList(Class<T> enumType, String separator) {
 		return Arrays.stream(enumType.getEnumConstants())
@@ -19,67 +23,65 @@ public class EnumUtil {
 	}
 
 	/**
-	 * List all enum constants which are in the specified enum class. It is
+	 * List all enum constants which are in the specified enum class.
-	 * equivalent to call
+	 * It is equivalent to call {@link #enumList(Class, String)} with the second parameter <code>", "</code>.
-	 * {@link #enumList(Class, String)} with the second parameter
-	 * <code>", "</code>
 	 *
 	 * @param enumType the enum class.
 	 * @return a string representation of the enum class.
+	 * @param <T> the type of the enum.
 	 */
 	public static <T extends Enum<T>> String enumList(Class<T> enumType) {
 		return enumList(enumType, ", ");
 	}
 
 	/**
-	 * Permet de rechercher l'existance d'un élément dans un enum, de façon
+	 * Search for a specific enum entry in the provided enum type, using the case-insensitive search string.
-	 * insensible à la casse
 	 *
-	 * @param enumType la classe correpondant à l'enum à lister
+	 * @param enumType the class of the enum in which to search
-	 * @param search l'élément à rechercher, insensible à la casse
+	 * @param search the case-insensitive name of the enum value to return.
-	 * @return l'élément de l'énumarétion, si elle a été trouvée, null sinon
+	 * @return the element found in the enum, or null if not found.
+	 * @param <T> the type of the enum.
 	 */
 	public static <T extends Enum<T>> T searchEnum(Class<T> enumType, String search) {
-		T[] elements = enumType.getEnumConstants();
+		for (T el : enumType.getEnumConstants()) {
-
+			if (el.name().equalsIgnoreCase(search)) {
-		for (T el : elements)
+				return el;
-			if (el.name().equalsIgnoreCase(search)) return el;
+			}
+		}
 		return null;
 	}
 
 	/**
-	 * Permet de rechercher l'existance d'un élément dans un enum, de façon
+	 * Search for a specific enum entry in the provided enum type, using the case-insensitive search string.
-	 * insensible à la casse
+	 * unlike {@link #searchEnum(Class, String)}, this method does not statically check the enum type, in case it is not
-	 * La validité de la classe passé en premier paramètre est vérifiée
+	 * known at compilation time.
-	 * dynamiquement et non
-	 * statiquement. Préférez l'utilisation de
-	 * {@link #searchEnum(Class, String)} quand c'est possible.
 	 *
-	 * @param enumType la classe correpondant à l'enum à lister
+	 * For a statically checked enum type, uses {@link #searchEnum(Class, String)} instead.
-	 * @param search l'élément à rechercher, insensible à la casse
+	 *
-	 * @return l'élément de l'énumération, si elle a été trouvée et si la classe
+	 * @param enumType the class of the enum in which to search
-	 *         passée en paramètre est un enum, null dans les autres cas
+	 * @param search the case-insensitive name of the enum value to return.
+	 * @return the element found in the enum, or null if not found or if the provideid type is not an enum.
 	 */
 	public static Enum<?> searchUncheckedEnum(Class<?> enumType, String search) {
-		if (!enumType.isEnum()) return null;
+		if (!enumType.isEnum())
-		Enum<?>[] elements = (Enum<?>[]) enumType.getEnumConstants();
+			return null;
-
+		for (Enum<?> el : (Enum<?>[]) enumType.getEnumConstants()) {
-		for (Enum<?> el : elements)
+			if (el.name().equalsIgnoreCase(search)) {
-			if (el.name().equalsIgnoreCase(search)) return el;
+				return el;
+			}
+		}
 		return null;
 	}
 
 	/**
-	 * Retourne une valeur aléatoire parmis les élément de l'Enum spécifié en
+	 * Pick a random value from an enum type.
-	 * paramètre.
 	 *
-	 * @param enumType l'enum dans lequel piocher la valeur
+	 * @param enumType the class of the enum in which to pick the value from
-	 * @return une des valeurs de l'enum
+	 * @return one of the enum value, or null if the provided enum is empty.
+	 * @param <T> the type of the enum.
 	 */
 	public static <T extends Enum<T>> T randomValue(Class<T> enumType) {
-		T[] elements = enumType.getEnumConstants();
+		return RandomUtil.arrayElement(enumType.getEnumConstants());
-
-		return elements[RandomUtil.rand.nextInt(elements.length)];
 	}
 
 }

pandalib-util/src/main/java/fr/pandacube/lib/util/FileUtils.java

@@ -5,10 +5,16 @@ import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.attribute.BasicFileAttributes;
 
+/**
+ * Provides utility methods to manipulate files and directories
+ */
 public class FileUtils {
 
 
-	
+	/**
+	 * Recursively delete the provided file and all of its content if it is a directory.
+	 * @param target the target file or directory.
+	 */
 	public static void delete(File target) {
 		if (target.isDirectory())
 			for (File child : target.listFiles())
@@ -16,8 +22,21 @@ public class FileUtils {
 		target.delete();
 	}
 
-	
+	/**
+	 * Recursively copy the provided source file or directory to the provided target.
+	 * @param source the source file or directory.
+	 * @param target the copy destination.
+	 * @throws IOException if an IO error occurs.
+	 * @throws IllegalStateException if the target destination already exists and is not a directory.
+	 * @throws IllegalArgumentException if at least one of the parameter is null, or if the source doesn’t exists.
+	 */
 	public static void copy(File source, File target) throws IOException {
+		if (source == null || !source.exists()) {
+			throw new IllegalArgumentException("source is null or doesn’t exists: " + source);
+		}
+		if (target == null) {
+			throw new IllegalArgumentException("target cannot be null");
+		}
 		if (target.exists() && !target.isDirectory()) {
 			throw new IllegalStateException("target file already exists: " + target);
 		}

pandalib-util/src/main/java/fr/pandacube/lib/util/IteratorIterator.java

@@ -6,69 +6,103 @@ import java.util.Collection;
 import java.util.Iterator;
 import java.util.NoSuchElementException;
 
+/**
+ * An {@link Iterator} that iterate over all the elements of all the provided iterators.
+ * In other words, this class concatenate the provided iterators.
+ * @param <T> the type of the values in the iterators
+ */
 public class IteratorIterator<T> implements Iterator<T> {
 
+	/**
+	 * Create an {@link IteratorIterator} with the provided {@link Collection} of {@link Iterable}.
+	 * The iterables’ iterators will be concatenated in the order of the collection’s iterator.
+	 * @param coll the collection of iterables.
+	 * @return a new instance of {@link IteratorIterator} iterating over the elements of the provided iterables.
+	 * @param <T> the type of the values in the iterables.
+	 */
 	public static <T> IteratorIterator<T> ofCollectionOfIterable(Collection<Iterable<T>> coll) {
 		return new IteratorIterator<>(coll.stream().map(Iterable::iterator).iterator());
 	}
 
+	/**
+	 * Create an {@link IteratorIterator} with the provided {@link Collection} of {@link Iterator}.
+	 * The iterators will be concatenated in the order of the collection’s iterator.
+	 * @param coll the collection of iterators.
+	 * @return a new instance of {@link IteratorIterator} iterating over the elements of the provided iterators.
+	 * @param <T> the type of the values in the iterators.
+	 */
 	public static <T> IteratorIterator<T> ofCollectionOfIterator(Collection<Iterator<T>> coll) {
 		return new IteratorIterator<>(new ArrayList<>(coll).iterator());
 	}
 
+	/**
+	 * Create an {@link IteratorIterator} with the provided array of {@link Iterable}.
+	 * The iterables’ iterators will be concatenated in the order of the array.
+	 * @param arr the array of iterables.
+	 * @return a new instance of {@link IteratorIterator} iterating over the elements of the provided iterables.
+	 * @param <T> the type of the values in the iterables.
+	 */
 	@SafeVarargs
 	public static <T> IteratorIterator<T> ofArrayOfIterable(Iterable<T>... arr) {
 		return new IteratorIterator<>(Arrays.stream(arr).map(Iterable::iterator).iterator());
 	}
 
+	/**
+	 * Create an {@link IteratorIterator} with the provided array of {@link Iterator}.
+	 * The iterators will be concatenated in the order of the array.
+	 * @param arr the array of iterators.
+	 * @return a new instance of {@link IteratorIterator} iterating over the elements of the provided iterators.
+	 * @param <T> the type of the values in the iterators.
+	 */
 	@SafeVarargs
 	public static <T> IteratorIterator<T> ofArrayOfIterator(Iterator<T>... arr) {
 		return new IteratorIterator<>(Arrays.asList(arr).iterator());
 	}
 
+
+
+
+
 	private final Iterator<Iterator<T>> iterators;
 
-	private Iterator<T> currentIterator = null;
+	private Iterator<T> currentValueIterator = null;
+	private Iterator<T> nextValueIterator = null;
 	
 	private IteratorIterator(Iterator<Iterator<T>> iterators) {
 		this.iterators = iterators;
 	}
 	
-	private void fixCurrentIterator() {
+	private void fixNextIterator() {
-		if (currentIterator != null && !currentIterator.hasNext()) {
+		if (nextValueIterator != null && !nextValueIterator.hasNext()) {
-			currentIterator = null;
+			nextValueIterator = null;
 		}
 	}
 	private void fixState() {
-		fixCurrentIterator();
+		fixNextIterator();
-		while (currentIterator == null && iterators.hasNext()) {
+		while (nextValueIterator == null && iterators.hasNext()) {
-			currentIterator = iterators.next();
+			nextValueIterator = iterators.next();
-			fixCurrentIterator();
+			fixNextIterator();
 		}
 	}
 
 	@Override
 	public boolean hasNext() {
 		fixState();
-		return currentIterator != null && currentIterator.hasNext();
+		return nextValueIterator != null && nextValueIterator.hasNext();
 	}
 	
 	@Override
 	public T next() {
 		if (!hasNext())
 			throw new NoSuchElementException("No next value found in iterator.");
-		return currentIterator.next();
+		currentValueIterator = nextValueIterator;
+		return currentValueIterator.next();
 	}
 
-	/**
-	 * @implNote  The current implementation of {@link IteratorIterator} may not support
-	 * running this method if the current position is the last value of one of
-	 * the underlying iterable, and if the {@link #hasNext()} method has been called before this one.
-	 */
 	@Override
 	public void remove() {
-		// TODO change code to avoid currentIterator being null because we are about to change currentIterator
+		if (currentValueIterator == null)
-		if (currentIterator != null)
+			throw new IllegalStateException();
-			currentIterator.remove();
+		currentValueIterator.remove();
 	}
 }

pandalib-util/src/main/java/fr/pandacube/lib/util/JArithmeticInterpreter.java

@@ -1,736 +0,0 @@
-package fr.pandacube.lib.util;
-
-//******************************************************************************
-//***
-//***		INTERPRETEUR ARITHMETIQUE version 2.1			Version Java
-//***
-//***
-//***
-//******************************************************************************
-
-/*
-Historique:
-
-2.1:
-  - Version Java disponible:
-  # les operateurs mathematiques disponibles sont ceux de Java donc certains manquent.
-
-2.0:
-  - Portage en C++ et debut en Java
-
-Version C++:
-
-  - Meilleure gestion memoire lors de la construction de l'expression.
-  - Acceleration de certaines operations.
-
-Version Java:
-
-  - Premiere version. Normalement ca doit marcher
-
-1.3b: ajoute les fonctions suivantes: (NON DISTRIBUEE)
-    - reconnaissance du symbole <EFBFBD>
-    - ecriture formatee d'expression (<EFBFBD> ameliorer)
-
-1.2: corrige les bugs suivants:
-    - erreur sur l'interpretation de fonctions unaires imbriquees telles que ln(exp(x)).
-    - la fonction puissance (pour les puissances entieres).
-     ajoute:
-    - la verification de la chaine entree (voir code d'erreur)
-    - la verification de l'existence de l'evaluation (voir code d'erreur)
-
-
-1.1: corrige un bug au niveau de l'interpretation des fonctions du type:
-
-      exp(-(x+y))
-
-1.0: premiere version
-
-Le code source peut etre librement modifie et distribue.
-
-Puisqu'il s'agit d'un  essai en Java, le code ne doit pas etre super genial et merite sans doute
-quelques modifications.En particulier, il serait interessant de rajouter le support des Exceptions
-pour les calculs (division par zero, etc...).
-
-*/
-
-// Classe servant à palier l'absence de passage par variables ou reference
-
-class VariableInt {
-	public int mValue;
-}
-
-// Classe principale
-
-public class JArithmeticInterpreter {
-
-	// Variables
-
-	final int mOperator;
-	final double mValue;
-	JArithmeticInterpreter fg, fd;
-
-	// Methods
-
-	// ....................................................................................
-	// Node
-
-	private JArithmeticInterpreter() {
-		this(0, 0);
-	}
-
-	// ....................................................................................
-	// Node
-
-	private JArithmeticInterpreter(int Operator, double Value) {
-		mOperator = Operator;
-		mValue = Value;
-	}
-
-	// ....................................................................................
-	// Construct_Tree
-
-	private static JArithmeticInterpreter constructTree(StringBuffer string, int length) {
-		int imbric, Bimbric;
-		int priorite, ope;
-		int position, positionv, i, j;
-		int opetemp = 0;
-		int espa = 0, espat = 0;
-		int caspp = 0;
-
-		JArithmeticInterpreter node;
-
-		// Initialisation des variables
-
-		if (length <= 0) {
-			return null;
-		}
-
-		ope = 0;
-		imbric = 0;
-		Bimbric = 128;
-		priorite = 6;
-		i = 0;
-		positionv = position = 0;
-
-		// Mise en place des donnees sur le morceau de chaine
-
-		while (i < length)
-			if (((string.charAt(i) > 47) && (string.charAt(i) < 58)) || (string.charAt(i) == '<27>')) {
-				if (priorite > 5) {
-					priorite = 5;
-					positionv = i;
-				}
-				i++;
-			}
-			else if ((string.charAt(i) > 96) && (string.charAt(i) < 117)) {
-				VariableInt Vopetemp, Vespat;
-
-				Vopetemp = new VariableInt();
-				Vespat = new VariableInt();
-
-				Vopetemp.mValue = opetemp;
-				Vespat.mValue = espat;
-
-				FindOperator(Vopetemp, Vespat, string, i);
-
-				opetemp = Vopetemp.mValue;
-				espat = Vespat.mValue;
-
-				if (opetemp >= 0) {
-					if (imbric < Bimbric) {
-						Bimbric = imbric;
-						ope = opetemp;
-						position = i;
-						priorite = 4;
-						espa = espat;
-					}
-					else if ((imbric == Bimbric) && (priorite >= 4)) {
-						ope = opetemp;
-						position = i;
-						priorite = 4;
-						espa = espat;
-					}
-					j = i + 1;
-					i += espat;
-					while (j < i)
-						j++;
-
-				}
-				else if (string.charAt(i) == 't') {
-					if (priorite == 6) ope = -1;
-					i++;
-				}
-				else if (string.charAt(i) == 'p') {
-					if (priorite == 6) ope = -2;
-					i++;
-				}
-				else if (string.charAt(i) == 'r') {
-					if (priorite == 6) ope = -2;
-					i++;
-				}
-				else if (string.charAt(i) == 'n') {
-					if (priorite == 6) ope = -1;
-					i++;
-				}
-				else {
-					return null;
-				}
-			}
-			else
-				switch (string.charAt(i)) {
-				case '(':
-					imbric++;
-					i++;
-					break;
-				case ')':
-					imbric--;
-					i++;
-					break;
-				case '+':
-					if (imbric < Bimbric) {
-						Bimbric = imbric;
-						priorite = 1;
-						ope = 1;
-						position = i;
-						caspp = 0;
-					}
-					else if (imbric == Bimbric) {
-						priorite = 1;
-						ope = 1;
-						position = i;
-						caspp = 0;
-					}
-					i++;
-					break;
-				case '-':
-					if (imbric < Bimbric) {
-						if ((i - 1) < 0) {
-							if (priorite > 5) {
-								priorite = 1;
-								position = i;
-								ope = 2;
-								Bimbric = imbric;
-								caspp = 1;
-							}
-						}
-						else if (string.charAt(i - 1) == '(') {
-							if (priorite > 1) {
-								priorite = 1;
-								position = i;
-								Bimbric = imbric;
-								caspp = 1;
-								ope = 2;
-							}
-						}
-						else {
-							Bimbric = imbric;
-							priorite = 1;
-							ope = 2;
-							position = i;
-							caspp = 0;
-						}
-					}
-					else if (imbric == Bimbric) if ((i - 1) < 0) {
-						if (priorite > 5) {
-							priorite = 1;
-							position = i;
-							ope = 2;
-							caspp = 1;
-						}
-					}
-					else if (string.charAt(i - 1) == '(') {
-						if (priorite > 1) {
-							priorite = 1;
-							position = i;
-							caspp = 1;
-							ope = 2;
-						}
-					}
-					else {
-						priorite = 1;
-						ope = 2;
-						position = i;
-						caspp = 0;
-					}
-					i++;
-					break;
-				case '*':
-					if (imbric < Bimbric) {
-						Bimbric = imbric;
-						priorite = 2;
-						ope = 3;
-						position = i;
-					}
-					else if ((imbric == Bimbric) && (priorite >= 2)) {
-						priorite = 2;
-						ope = 3;
-						position = i;
-					}
-					i++;
-					break;
-				case '/':
-					if (imbric < Bimbric) {
-						Bimbric = imbric;
-						priorite = 2;
-						ope = 4;
-						position = i;
-					}
-					else if ((imbric == Bimbric) && (priorite >= 2)) {
-						priorite = 2;
-						ope = 4;
-						position = i;
-					}
-					i++;
-					break;
-				case '^':
-					if (imbric < Bimbric) {
-						Bimbric = imbric;
-						priorite = 3;
-						ope = 5;
-						position = i;
-					}
-					else if ((imbric == Bimbric) && (priorite >= 3)) {
-						priorite = 3;
-						ope = 5;
-						position = i;
-					}
-					i++;
-					break;
-				case '.':
-					i++;
-					break;
-				default:
-					return null;
-				}
-
-		if (imbric != 0) {
-			return null;
-		}
-
-		// Traitement des donnees
-
-		if (priorite == 6) {
-			node = new JArithmeticInterpreter(ope, 0.0);
-			return node;
-		}
-		else if (caspp == 1) {
-			node = new JArithmeticInterpreter(2, 0);
-
-			node.fg = new JArithmeticInterpreter(0, 0);
-			node.fd = new JArithmeticInterpreter();
-
-			if ((length - position - 1 - Bimbric) == 0) { // argument absent
-				return null;
-			}
-			StringBuffer temp = CopyPartialString(string, (position + 1), (length - 1 - Bimbric));
-			node.fd = constructTree(temp, (length - position - 1 - Bimbric));
-
-			return node;
-		}
-
-		else if (priorite == 5) {
-			node = new JArithmeticInterpreter(0, calc_const(string, positionv));
-
-			return node;
-		}
-		else if (ope > 5) {
-			node = new JArithmeticInterpreter(ope, 0);
-
-			if ((length - position - espa - Bimbric) == 0) { // argument absent
-				return null;
-			}
-			StringBuffer temp = CopyPartialString(string, (position + espa), (length - 1));
-			node.fg = constructTree(temp, (length - position - espa - Bimbric));
-			return node;
-		}
-		else {
-			node = new JArithmeticInterpreter(ope, 0);
-
-			if ((position - Bimbric) == 0) { // argument absent
-				return null;
-			}
-			StringBuffer temp = CopyPartialString(string, Bimbric, (position - 1));
-			node.fg = constructTree(temp, (position - Bimbric));
-			if ((length - position - 1 - Bimbric) == 0) { // argument absent
-				return null;
-			}
-			temp = CopyPartialString(string, (position + 1), (length - 1 - Bimbric));
-			node.fd = constructTree(temp, (length - position - 1 - Bimbric));
-			return node;
-		}
-	}
-
-	// ....................................................................................
-
-	private double computeTree() {
-		if (mOperator == 0) return mValue;
-
-		double valueL = fg.computeTree();
-
-		double valueR = 0;
-
-		if (fd != null) valueR = fd.computeTree();
-
-		switch (mOperator) {
-		case 1: // +
-			return (valueL + valueR);
-		case 2: // -
-			return (valueL - valueR);
-		case 3: // *
-			return (valueL * valueR);
-		case 4: // -
-			if (valueR == 0) {
-				return 0;
-			}
-			return (valueL / valueR);
-		case 5: // ^
-			return Math.pow(valueL, valueR);
-		case 6: // exp
-			return Math.exp(valueL);
-		case 7: // ln
-			if (valueL <= 0) {
-				return 0;
-			}
-			return (Math.log(valueL) / Math.log(2));
-		case 8: // log
-			if (valueL <= 0) {
-				return 0;
-			}
-			return Math.log(valueL);
-		case 9: // sqrt
-			if (valueL < 0) {
-				return 0;
-			}
-			return Math.sqrt(valueL);
-		case 10: // abs
-			return Math.abs(valueL);
-		case 11:
-			return Math.sin(valueL); // sin
-		case 12:
-			return Math.cos(valueL); // cos
-		case 13:
-			return Math.tan(valueL); // tan
-		case 14:
-			return Math.asin(valueL); // asin
-		case 15:
-			return Math.acos(valueL); // acos
-		case 16:
-			return Math.atan(valueL); // atan
-		default:
-			return 0;
-		}
-	}
-
-	// ....................................................................................
-	// Write_Tree
-
-	private void writeTree(StringBuffer string) {
-		boolean parenthese = false;
-
-		switch (mOperator) {
-		case 0:
-			string.append(StringUtil.formatDouble(mValue));
-			break;
-		case 1:
-			fg.writeTree(string);
-			string.append('+');
-			fd.writeTree(string);
-			break;
-		case 2:
-			if (fg.mOperator != 0 || fg.mValue != 0)
-				fg.writeTree(string);
-			string.append('-');
-			if ((fd.mOperator == 1) || (fd.mOperator == 2)) {
-				parenthese = true;
-				string.append('(');
-			}
-			fd.writeTree(string);
-			if (parenthese) string.append(')');
-			break;
-		case 3:
-			if ((fg.mOperator == 1) || (fg.mOperator == 2)) {
-				parenthese = true;
-				string.append('(');
-			}
-			fg.writeTree(string);
-			if (parenthese) string.append(')');
-			parenthese = false;
-			string.append('*');
-			if ((fd.mOperator == 1) || (fd.mOperator == 2)) {
-				parenthese = true;
-				string.append('(');
-			}
-			fd.writeTree(string);
-			if (parenthese) string.append(')');
-			break;
-		case 4:
-			if ((fg.mOperator == 1) || (fg.mOperator == 2)) {
-				parenthese = true;
-				string.append('(');
-			}
-			fg.writeTree(string);
-			if (parenthese) string.append(')');
-			parenthese = false;
-			string.append('/');
-			if ((fd.mOperator > 0) && (fd.mOperator < 5)) {
-				parenthese = true;
-				string.append('(');
-			}
-			fd.writeTree(string);
-			if (parenthese) string.append(')');
-			break;
-		case 5:
-			if ((fg.mOperator > 0) && (fg.mOperator < 5)) {
-				parenthese = true;
-				string.append('(');
-			}
-			fg.writeTree(string);
-			if (parenthese) string.append(')');
-			parenthese = false;
-			string.append('^');
-			if ((fd.mOperator > 0) && (fd.mOperator < 5)) {
-				parenthese = true;
-				string.append('(');
-			}
-			fd.writeTree(string);
-			if (parenthese) string.append(')');
-			break;
-		case 6:
-			string.append("exp(");
-			fg.writeTree(string);
-			string.append(')');
-			break;
-		case 7:
-			string.append("log(");
-			fg.writeTree(string);
-			string.append(')');
-			break;
-		case 8:
-			string.append("ln(");
-			fg.writeTree(string);
-			string.append(')');
-			break;
-		case 9:
-			string.append("sqrt(");
-			fg.writeTree(string);
-			string.append(')');
-			break;
-		case 10:
-			string.append("|");
-			fg.writeTree(string);
-			string.append('|');
-			break;
-		case 11:
-			string.append("sin(");
-			fg.writeTree(string);
-			string.append(')');
-			break;
-		case 12:
-			string.append("cos(");
-			fg.writeTree(string);
-			string.append(')');
-			break;
-		case 13:
-			string.append("tan(");
-			fg.writeTree(string);
-			string.append(')');
-			break;
-		case 14:
-			string.append("asin(");
-			fg.writeTree(string);
-			string.append(')');
-			break;
-		case 15:
-			string.append("acos(");
-			fg.writeTree(string);
-			string.append(')');
-			break;
-		case 16:
-			string.append("atan(");
-			fg.writeTree(string);
-			string.append(')');
-			break;
-		}
-	}
-
-	// ....................................................................................
-	// calc_const
-
-	private static double calc_const(StringBuffer chaine, int pos) {
-		int i = pos, j;
-		double temp = 0;
-		int signe = 1;
-		int longueur = chaine.length();
-
-		if (chaine.charAt(i) == '-') {
-			signe = -1;
-			i++;
-		}
-		if (chaine.charAt(i) == 'π') return signe * Math.PI;
-
-		while (i < longueur && chaine.charAt(i) > 47 && chaine.charAt(i) < 58) {
-			temp = temp * 10 + (chaine.charAt(i) - 48);
-			i++;
-		}
-		if (i < longueur && chaine.charAt(i) == '.') {
-			i++;
-			j = 1;
-			while (i < longueur && chaine.charAt(i) > 47 && chaine.charAt(i) < 58) {
-				temp = temp + (chaine.charAt(i) - 48) * Math.exp(-j * 2.30258509);
-				i++;
-				j++;
-			}
-		}
-		return (signe * temp);
-	}
-
-	// ....................................................................................
-	// FindOperator
-
-	private static void FindOperator(VariableInt oper, VariableInt esp, StringBuffer chaine, int pos) {
-		switch (chaine.charAt(pos)) {
-		case 'a':
-			switch (chaine.charAt(pos + 1)) {
-			case 'b':
-				esp.mValue = 3;
-				oper.mValue = 10;
-				break;
-			case 'c':
-				esp.mValue = 4;
-				oper.mValue = 15;
-				break;
-			case 's':
-				esp.mValue = 4;
-				oper.mValue = 14;
-				break;
-			case 't':
-				esp.mValue = 4;
-				oper.mValue = 16;
-				break;
-			}
-			break;
-		case 'c':
-			if (chaine.charAt(pos + 1) == 'h') {
-				esp.mValue = 2;
-				oper.mValue = 18;
-			}
-			else if ((chaine.charAt(pos + 1) == 'o') && (chaine.charAt(pos + 2) == 's'))
-				if (chaine.charAt(pos + 3) == 'h') {
-				esp.mValue = 4;
-				oper.mValue = 18;
-			}
-			else {
-				esp.mValue = 3;
-				oper.mValue = 12;
-			}
-			break;
-		case 'e':
-			if ((chaine.charAt(pos + 1) == 'x') && (chaine.charAt(pos + 2) == 'p')) {
-				esp.mValue = 3;
-				oper.mValue = 6;
-			}
-			else
-				oper.mValue = -10;
-			break;
-		case 'l':
-			if (chaine.charAt(pos + 1) == 'n') {
-				esp.mValue = 2;
-				oper.mValue = 7;
-			}
-			else if ((chaine.charAt(pos + 1) == 'o') && (chaine.charAt(pos + 2) == 'g')) {
-				esp.mValue = 3;
-				oper.mValue = 8;
-			}
-			else
-				oper.mValue = -10;
-			break;
-		case 's':
-			if (chaine.charAt(pos + 1) == 'h') {
-				esp.mValue = 2;
-				oper.mValue = 17;
-			}
-			else if (chaine.charAt(pos + 1) == 'q') {
-				esp.mValue = 4;
-				oper.mValue = 9;
-			}
-			else if (chaine.charAt(pos + 3) == 'h') {
-				esp.mValue = 4;
-				oper.mValue = 17;
-			}
-			else {
-				esp.mValue = 3;
-				oper.mValue = 11;
-			}
-			break;
-		case 't':
-			if (chaine.charAt(pos + 1) == 'h') {
-				esp.mValue = 2;
-				oper.mValue = 19;
-			}
-			else if ((chaine.charAt(pos + 1) == 'a') && (chaine.charAt(pos + 2) == 'n')) {
-				if (chaine.charAt(pos + 3) == 'h') {
-					esp.mValue = 4;
-					oper.mValue = 19;
-				}
-				else {
-					esp.mValue = 3;
-					oper.mValue = 13;
-				}
-			}
-			else
-				oper.mValue = -10;
-			break;
-		default:
-			oper.mValue = -10;
-			break;
-		}
-	}
-
-	// ....................................................................................
-	// CopyPartialString
-
-	private static StringBuffer CopyPartialString(StringBuffer chaine, int debut, int fin) {
-		StringBuffer chartemp;
-		int a = fin - debut + 1;
-		chartemp = new StringBuffer(a + 1);
-
-		for (int i = 0; i < a; i++)
-			chartemp.append(chaine.charAt(debut + i));
-
-		return chartemp;
-	}
-
-	public static double getResultFromExpression(String expr, StringBuffer writeTree) {
-		StringBuffer input = new StringBuffer(expr);
-
-		JArithmeticInterpreter jai = null;
-
-		try {
-			jai = JArithmeticInterpreter.constructTree(input, input.length());
-		} catch (Exception ignored) {}
-
-		if (jai == null) throw new IllegalArgumentException("Le calcul passé en paramètre est invalide");
-
-		if (writeTree != null) {
-			writeTree.setLength(0);
-			jai.writeTree(writeTree);
-		}
-
-		return jai.computeTree();
-	}
-
-	public static double getResultFromExpression(String expr) {
-		return getResultFromExpression(expr, null);
-	}
-
-	public static void main(String[] args) {
-
-		StringBuffer b = new StringBuffer(0);
-
-		String disp_res = StringUtil.formatDouble(JArithmeticInterpreter.getResultFromExpression("1245.25*2", b));
-
-		System.out.println(disp_res);
-		System.out.println(b);
-	} // */
-
-}

pandalib-util/src/main/java/fr/pandacube/lib/util/Lazy.java

@@ -18,6 +18,10 @@ public class Lazy<T> implements Supplier<T> {
 	private final Supplier<T> supplier;
 	private boolean cached = false;
 
+	/**
+	 * Create a lazy value loader that will call the provided supplier to get the value.
+	 * @param s the supplier from which the value is fetched.
+	 */
 	public Lazy(Supplier<T> s) {
 		supplier = Objects.requireNonNull(s);
 	}
@@ -25,21 +29,28 @@ public class Lazy<T> implements Supplier<T> {
 	/**
 	 * Get the wrapped value, from cache or from the provider if it is not yet cached.
 	 * 
-	 * If the provider throws an exception, it will be redirected to the caller as is, and no value will be cached (the next call to this method will
+	 * If the provider throws an exception, it will be redirected to the caller as is, and no value will be cached
-	 * execute the supplier again).
+	 * (the next call to this method will execute the supplier again).
 	 */
 	@Override
 	public synchronized T get() {
-		if (!cached) // check outside synchronized method to reduce useless synchronization if value is already cached
+		if (!cached)
 			set(supplier.get());
 		return cachedValue;
 	}
 
+	/**
+	 * Reset the cached value. The next call to {@link #get()} will get the value from the provider.
+	 */
 	public synchronized void reset() {
 		cached = false;
 		cachedValue = null;
 	}
 
+	/**
+	 * Manually set the value to the provided one.
+	 * @param value the value to put in the cache.
+	 */
 	public synchronized void set(T value) {
 		cachedValue = value;
 		cached = true;

pandalib-util/src/main/java/fr/pandacube/lib/util/LazyOrException.java

@@ -13,12 +13,16 @@ import fr.pandacube.lib.util.ThrowableUtil.SupplierException;
  *
  * @param <T> the type of the enclosed value.
  */
-public class LazyOrException<T> {
+public class LazyOrException<T> implements SupplierException<T> {
 	
 	private T cachedValue;
 	private final SupplierException<T> supplier;
 	private boolean cached = false;
 
+	/**
+	 * Create a lazy value loader that will call the provided supplier to get the value.
+	 * @param s the supplier from which the value is fetched.
+	 */
 	public LazyOrException(SupplierException<T> s) {
 		supplier = Objects.requireNonNull(s);
 	}
@@ -26,20 +30,28 @@ public class LazyOrException<T> {
 	/**
 	 * Get the wrapped value, from cache or from the provider if it is not yet cached.
 	 * 
-	 * If the provider throws an exception, it will be redirected to the caller as is, and no value will be cached (the next call to this method will
+	 * If the provider throws an exception, it will be redirected to the caller as is, and no value will be cached
-	 * execute the supplier again).
+	 * (the next call to this method will execute the supplier again).
 	 */
+	@Override
 	public synchronized T get() throws Exception {
-		if (!cached) // check outside synchronized method to reduce useless synchronization if value is already cached
+		if (!cached)
 			set(supplier.get());
 		return cachedValue;
 	}
 
+	/**
+	 * Reset the cached value. The next call to {@link #get()} will get the value from the provider.
+	 */
 	public synchronized void reset() {
 		cached = false;
 		cachedValue = null;
 	}
 
+	/**
+	 * Manually set the value to the provided one.
+	 * @param value the value to put in the cache.
+	 */
 	public synchronized void set(T value) {
 		cachedValue = value;
 		cached = true;

pandalib-util/src/main/java/fr/pandacube/lib/util/LevenshteinDistance.java

@@ -1,53 +1,144 @@
 package fr.pandacube.lib.util;
 
 import java.util.Objects;
+import java.util.function.Function;
 import java.util.function.ToIntBiFunction;
 
+/**
+ * Implementation of the <a href="https://en.wikipedia.org/wiki/Levenshtein_distance">Levenshtein distance algorithm</a>
+ * that operate on characters. Its purpose is to compute a "distance" between two strings of characters, that represents
+ * how many edition operation it is needed to perform on the first string ({@code initialString}) to optain the second
+ * one ({@code finalString}).
+ *
+ * All the parameters of the algorithm are configurable:
+ * <ul>
+ *     <li>The score of adding a character</li>
+ *     <li>The score of removing a character</li>
+ *     <li>The score of replacing any pair of character</li>
+ * </ul>
+ *
+ * A simple usage of this class is to call the constructor {@link #LevenshteinDistance(String, String, int, int,
+ * ToIntBiFunction)} (for a full control of the parameters) or {@link #LevenshteinDistance(String, String)} (to keep the
+ * default parameters value); then to call the method {@link #getCurrentDistance()} to compute the Levenshtein distance
+ * between the two strings.
+ *
+ * A more advanced usage offer the possibility to progressively compute a distance from a predefined
+ * {@code initialString} to a {@code finalString} that is feeded progressively using {@link #add(char)} or
+ * {@link #add(String)}. This is useful if the {@code finalString} is an input that is currently being typed by the
+ * user, so the application can progressively update a list of suggested words based on the distance.
+ * For this usage, you can use those constructors to avoid initializing the {@code finalString}:
+ * {@link #LevenshteinDistance(String, int, int, ToIntBiFunction)} or {@link #LevenshteinDistance(String)}.
+ *
+ *
+ */
 public class LevenshteinDistance {
 	
-	private final String initialList;
+	private final String initialString;
 
 	private final int elementAdditionScore;
 	private final int elementDeletionScore;
 	
 	private final ToIntBiFunction<Character, Character> elementDistanceFunction;
 	
-	private int[] prev, curr; 
+	private int[] prev, curr; // dynamic programming interval arrays
 	
 	private int progress = 0;
 
-	public LevenshteinDistance(String initList, String finList, int addScore, int delScore, ToIntBiFunction<Character, Character> elemDistFn) {
+	/**
-		initialList = initList == null ? "" : initList;
+	 * Create a new instance of {@link LevenshteinDistance} that compute the edit-distance between {@code initialString}
-		elementAdditionScore = addScore;
+	 * and {@code finalString}.
-		elementDeletionScore = delScore;
+	 * <p>
-		elementDistanceFunction = elemDistFn == null ? ((e1, e2) -> Objects.equals(e1, e2) ? 0 : 1) : elemDistFn;
+	 * The score of each edition action is provided as parameters.
+	 *
+	 * @param initialString the initial string. Cannot be null.
+	 * @param finalString the final string. Can be null, and may be provided later using {@link #add(String)} or
+	 *                    character after character using {@link #add(char)}.
+	 * @param elementAdditionScore the score for adding a character.
+	 * @param elementDeletionScore the score for removing a character.
+	 * @param elementDistanceFunction a {@link Function} that computes the score for replacing the character provided as
+	 *                                first argument, to the character provided as second argument. If it is null, it
+	 *                                will use a default function that will return 0 if the two characters are equals, 1
+	 *                                otherwise.
+	 */
+	public LevenshteinDistance(String initialString, String finalString, int elementAdditionScore, int elementDeletionScore, ToIntBiFunction<Character, Character> elementDistanceFunction) {
+		this.initialString = Objects.requireNonNull(initialString, "initialList");
+		this.elementAdditionScore = elementAdditionScore;
+		this.elementDeletionScore = elementDeletionScore;
+		this.elementDistanceFunction = elementDistanceFunction == null ? ((e1, e2) -> Objects.equals(e1, e2) ? 0 : 1) : elementDistanceFunction;
 
-		prev = new int[initialList.length() + 1];
+		prev = new int[this.initialString.length() + 1];
 
-		curr = new int[initialList.length() + 1];
+		curr = new int[this.initialString.length() + 1];
 		for (int i = 0; i < curr.length; i++)
-			curr[i] = i * elementDeletionScore;
+			curr[i] = i * this.elementDeletionScore;
 
-		add(finList);
+		if (finalString != null)
+			add(finalString);
 	}
 
-	public LevenshteinDistance() {
+	/**
-		this(null, null, 1, 1, null);
+	 * Create a new instance of {@link LevenshteinDistance} that will compute the edit-distance between
+	 * {@code initialString} and a final string  provided later using {@link #add(String)} or character after character
+	 * using {@link #add(char)}.
+	 * <p>
+	 * The score of each edition action is provided as parameters.
+	 *
+	 * @param initialString the initial string. Cannot be null.
+	 * @param elementAdditionScore the score for adding a character.
+	 * @param elementDeletionScore the score for removing a character.
+	 * @param elementDistanceFunction a {@link Function} that computes the score for replacing the character provided as
+	 *                                first argument, to the character provided as second argument. If it is null, it
+	 *                                will use a default function that will return 0 if the two characters are equals, 1
+	 *                                otherwise.
+	 */
+	public LevenshteinDistance(String initialString, int elementAdditionScore, int elementDeletionScore, ToIntBiFunction<Character, Character> elementDistanceFunction) {
+		this(initialString, null, elementAdditionScore, elementDeletionScore, elementDistanceFunction);
 	}
 
-	public LevenshteinDistance(String initList) {
+	/**
-		this(initList, null, 1, 1, null);
+	 * Create a new instance of {@link LevenshteinDistance} that compute the edit-distance between {@code initialString}
+	 * and {@code finalString}.
+	 * <p>
+	 * All the edition action are valued to 1. To customize the edition action score, use
+	 * {@link #LevenshteinDistance(String, String, int, int, ToIntBiFunction)}.
+	 *
+	 * @param initialString the initial string. Cannot be null.
+	 * @param finalString the final string. Can be null, and may be provided later using {@link #add(String)} or
+	 *                    character after character using {@link #add(char)}.
+	 */
+	public LevenshteinDistance(String initialString, String finalString) {
+		this(initialString, finalString, 1, 1, null);
 	}
 
-	public int getCurrentDistance() {
+	/**
-		return curr[curr.length - 1];
+	 * Create a new instance of {@link LevenshteinDistance} that will compute the edit-distance between
+	 * {@code initialString} and a final string  provided later using {@link #add(String)} or character after character
+	 * using {@link #add(char)}.
+	 * <p>
+	 * All the edition action are valued to 1. To customize the edition action score, use
+	 * {@link #LevenshteinDistance(String, int, int, ToIntBiFunction)}.
+	 *
+	 * @param initialString the initial string. Cannot be null.
+	 */
+	public LevenshteinDistance(String initialString) {
+		this(initialString, null);
 	}
 
+	/**
+	 * Add the provided string of characters to the {@code finalString}, and update the Levenshtein distance returned by
+	 * {@link #getCurrentDistance()}.
+	 * @param els the string of character.
+	 */
 	public void add(String els) {
 		for (char el : els.toCharArray())
 			add(el);
 	}
 
+	/**
+	 * Add a single character to the {@code finalString}, and update the Levenshtein distance returned by
+	 * 	 * {@link #getCurrentDistance()}.
+	 * @param el the character.
+	 */
 	public void add(char el) {
 		progress++;
 		// swap score arrays
@@ -56,13 +147,20 @@ public class LevenshteinDistance {
 		curr[0] = progress * elementAdditionScore;
 		
 		for (int i = 1; i < curr.length; i++) {
-			int S = prev[i - 1] + elementDistanceFunction.applyAsInt(initialList.charAt(i - 1), el);
+			int S = prev[i - 1] + elementDistanceFunction.applyAsInt(initialString.charAt(i - 1), el);
 			int A = prev[i] + elementAdditionScore;
 			int D = curr[i - 1] + elementDeletionScore;
 			curr[i] = Math.min(S, Math.min(A, D));
 		}
 	}
 
-	
+	/**
+	 * Get the currently calculated Levenshtein distance from the {@code initialString} to the already provided
+	 * {@code finalString}.
+	 * @return the Levenshtein distance.
+	 */
+	public int getCurrentDistance() {
+		return curr[curr.length - 1];
+	}
 
 }

pandalib-util/src/main/java/fr/pandacube/lib/util/ListUtil.java

@@ -2,9 +2,20 @@ package fr.pandacube.lib.util;
 
 import java.util.List;
 
+/**
+ * Provides utility methods related to lists.
+ */
 public class ListUtil {
 
-	
+	/**
+	 * Utility method to add to the provided list all the values in the provided interval.
+	 * <p>
+	 * If {@code min > max}, the list is not modified.
+	 *
+	 * @param list the list to add the values in.
+	 * @param min the inclusive min value.
+	 * @param max the inclusive max value.
+	 */
 	public static void addLongRangeToList(List<Long> list, long min, long max) {
 		for (long i = min; i <= max; i++) {
 			list.add(i);

pandalib-util/src/main/java/fr/pandacube/lib/util/Log.java

@@ -4,65 +4,156 @@ import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
+/**
+ * Utility class to easily log info into a provided logger. This class avoid the needs to fetch the logger everytime it
+ * is needed.
+ *
+ * For instance, this piece of code:
+ * <pre>
+ * getTheLoggerFromSomewhere().info(message);
+ * </pre>
+ *
+ * Can be simplified by one line to put in the startup code of the application:
+ * <pre>
+ * Log.setLogger(getTheLoggerFromSomewhere());
+ * </pre>
+ * And this code everywhere the application needs to log something:
+ * <pre>
+ * Log.info(message);
+ * </pre>
+ *
+ * This the {@link #setLogger(Logger)} method is not called, thi class will use the logger returned by
+ * {@link Logger#getGlobal()}.
+ */
 public final class Log {
 
 	private static Logger logger = Logger.getGlobal();
 	private static final AtomicBoolean logDebug = new AtomicBoolean(false);
 
-	public static void setDebug(boolean newVal) {
+	/**
-		logDebug.set(newVal);
+	 * Determine if {@link #debug(Throwable)}, {@link #debug(String)} and {@link #debug(String, Throwable)} will actually
+	 * log a message or not.
+	 * @param debug true to enable debug, false otherwise
+	 */
+	public static void setDebug(boolean debug) {
+		logDebug.set(debug);
 	}
 
+	/**
+	 * Tells if the debug mode is enabled or not.
+	 * @return true if debug is enabled, false otherwise.
+	 */
 	public static boolean isDebugEnabled() {
 		return logDebug.get();
 	}
 
+	/**
+	 * Get the backend logger of this class.
+	 * @return the logger.
+	 */
 	public static Logger getLogger() {
 		return logger;
 	}
 
-	public static void setLogger(Logger l) {
+	/**
-		logger = l;
+	 * Set the backend logger of this class.
+	 * @param logger the logger to use.
+	 */
+	public static void setLogger(Logger logger) {
+		Log.logger = logger;
 	}
 
+	/**
+	 * Log the provided message using logger level {@link Level#INFO}.
+	 * @param message the message to log
+	 * @see Logger#info(String)
+	 */
 	public static void info(String message) {
 		logger.info(message);
 	}
 
-	public static void warning(String message, Throwable t) {
+	/**
-		logger.log(Level.WARNING, message, t);
+	 * Log the provided message and throwable using logger level {@link Level#WARNING}.
+	 * @param message the message to log
+	 * @param throwable the throwable to log
+	 */
+	public static void warning(String message, Throwable throwable) {
+		logger.log(Level.WARNING, message, throwable);
 	}
 
-	public static void warning(Throwable t) {
+	/**
-		logger.log(Level.WARNING, "", t);
+	 * Log the provided throwable using logger level {@link Level#WARNING}.
+	 * @param throwable the throwable to log
+	 */
+	public static void warning(Throwable throwable) {
+		logger.log(Level.WARNING, "", throwable);
 	}
 
+	/**
+	 * Log the provided message using logger level {@link Level#WARNING}.
+	 * @param message the message to log
+	 * @see Logger#warning(String)
+	 */
 	public static void warning(String message) {
 		logger.warning(message);
 	}
 
-	public static void severe(String message, Throwable t) {
+	/**
-		logger.log(Level.SEVERE, message, t);
+	 * Log the provided message and throwable using logger level {@link Level#SEVERE}.
+	 * @param message the message to log
+	 * @param throwable the throwable to log
+	 */
+	public static void severe(String message, Throwable throwable) {
+		logger.log(Level.SEVERE, message, throwable);
 	}
 
-	public static void severe(Throwable t) {
+	/**
-		logger.log(Level.SEVERE, "", t);
+	 * Log the provided throwable using logger level {@link Level#SEVERE}.
+	 * @param throwable the throwable to log
+	 */
+	public static void severe(Throwable throwable) {
+		logger.log(Level.SEVERE, "", throwable);
 	}
 
+	/**
+	 * Log the provided message using logger level {@link Level#SEVERE}.
+	 * @param message the message to log
+	 * @see Logger#severe(String)
+	 */
 	public static void severe(String message) {
 		logger.severe(message);
 	}
 
-	public static void debug(String message, Throwable t) {
+	/**
+	 * Log the provided message and throwable using logger level {@link Level#INFO}, if the debug mode is enabled.
+	 * @param message the message to log
+	 * @param throwable the throwable to log
+	 * @see #isDebugEnabled()
+	 * @see #setDebug(boolean)
+	 */
+	public static void debug(String message, Throwable throwable) {
 		if (!logDebug.get()) return;
-		logger.log(Level.INFO, message, t);
+		logger.log(Level.INFO, message, throwable);
 	}
 
-	public static void debug(Throwable t) {
+	/**
+	 * Log the provided throwable using logger level {@link Level#INFO}, if the debug mode is enabled.
+	 * @param throwable the throwable to log
+	 * @see #isDebugEnabled()
+	 * @see #setDebug(boolean)
+	 */
+	public static void debug(Throwable throwable) {
 		if (!logDebug.get()) return;
-		logger.log(Level.INFO, "", t);
+		logger.log(Level.INFO, "", throwable);
 	}
 
+	/**
+	 * Log the provided message using logger level {@link Level#INFO}, if the debug mode is enabled.
+	 * @param message the message to log
+	 * @see #isDebugEnabled()
+	 * @see #setDebug(boolean)
+	 * @see Logger#info(String)
+	 */
 	public static void debug(String message) {
 		if (!logDebug.get()) return;
 		logger.info(message);

pandalib-util/src/main/java/fr/pandacube/lib/util/MappedListView.java

@@ -7,29 +7,31 @@ import java.util.ListIterator;
 import java.util.function.Function;
 
 /**
- * A Wrapper list that provides a mapped view of the backend list.
+ * A Wrapper list that provides a mapped view of the backend list. Every modification of this list will modify the bakend
- * Every modification of this list will modify the bakend list.
+ * list. Each time a value is accessed or modified, the appropriate setter or getter is used to convert the value
- * For each time a value is accessed or modified, the appropriate
+ * between the source {@code S} and the visible {@code T} type.
- * setter or getter is used to convert the value between the source {@code S}
- * and the visible {@code T} type.
  * @param <S> the source (backend) type
  * @param <T> the visible (mapped) type
  */
 public class MappedListView<S, T> extends AbstractList<T> {
 
+	/**
+	 * The backend list of this {@link MappedListView}.
+	 */
 	protected final List<S> backend;
 	private final Function<S, T> getter;
 	private final Function<T, S> setter;
 	
 	/**
-	 * 
+	 * Create a new wrapper for the provided backend list.
 	 * @param backend the list backing this list
-	 * @param getter the function converting the value from the backing list to the value of this list.
+	 * @param getter the function converting the value from the backing list to the value of this list. It is used for
-	 * It is used for every operation involving reading data from the backing list and comparing existing data.
+	 *               every operation involving reading data from the backing list and comparing existing data. For
-	 * For instance, {@link #indexOf(Object)} iterate through the backing list, converting all the values
+	 *               instance, {@link #indexOf(Object)} iterate through the backing list, converting all the values with
-	 * with {@code getter} before comparing them with the parameter of {@link #indexOf(Object)}.
+	 *               {@code getter} before comparing them with the parameter of {@link #indexOf(Object)} before
-	 * before comparing
+	 *               comparing.
-	 * @param setter used for modification of the data in the list (typically {@code add} and {@code set} methods)
+	 * @param setter used for modification of the data in the list (typically {@link #add(Object)} and
+	 *               {@link #set(int, Object)} methods)
 	 */
 	public MappedListView(List<S> backend, Function<S, T> getter, Function<T, S> setter) {
 		this.backend = backend;
@@ -37,75 +39,115 @@ public class MappedListView<S, T> extends AbstractList<T> {
 		this.setter = setter;
 	}
 
-	
+	/**
+	 * {@inheritDoc}
+	 */
 	@Override
 	public int size() {
 		return backend.size();
 	}
 
+	/**
+	 * {@inheritDoc}
+	 */
 	@Override
 	public T get(int index) {
 		return getter.apply(backend.get(index));
 	}
 
+	/**
+	 * {@inheritDoc}
+	 */
 	@Override
 	public T set(int index, T element) {
 		return getter.apply(backend.set(index, setter.apply(element)));
 	}
 
+	/**
+	 * {@inheritDoc}
+	 */
 	@Override
 	public boolean add(T element) {
 		return backend.add(setter.apply(element));
 	}
 
+	/**
+	 * {@inheritDoc}
+	 */
 	@Override
 	public void add(int index, T element) {
 		backend.add(index, setter.apply(element));
 	}
 
+	/**
+	 * {@inheritDoc}
+	 */
 	@Override
 	public T remove(int index) {
 		return getter.apply(backend.remove(index));
 	}
 
+	/**
+	 * {@inheritDoc}
+	 */
 	@Override
 	public void clear() {
 		backend.clear();
 	}
 
+	/**
+	 * {@inheritDoc}
+	 */
 	@Override
 	public List<T> subList(int fromIndex, int toIndex) {
 		return new MappedListView<>(backend.subList(fromIndex, toIndex), getter, setter);
 	}
 
+	/**
+	 * {@inheritDoc}
+	 */
 	@Override
 	protected void removeRange(int fromIndex, int toIndex) {
 		backend.subList(fromIndex, toIndex).clear();
 	}
 
+	/**
+	 * {@inheritDoc}
+	 */
 	@Override
 	public boolean equals(Object o) {
 		return backend.equals(o);
 	}
 
+	/**
+	 * {@inheritDoc}
+	 */
 	@Override
 	public int hashCode() {
 		return backend.hashCode();
 	}
 
-
+	/**
+	 * {@inheritDoc}
+	 */
 	@SuppressWarnings("unchecked")
 	@Override
 	public int indexOf(Object o) {
 		return backend.indexOf(setter.apply((T) o));
 	}
 
+	/**
+	 * {@inheritDoc}
+	 */
 	@SuppressWarnings("unchecked")
 	@Override
 	public int lastIndexOf(Object o) {
 		return backend.lastIndexOf(setter.apply((T) o));
 	}
 
+	/**
+	 * {@inheritDoc}
+	 */
 	@Override
 	public Iterator<T> iterator() {
 		return new Iterator<>() {
@@ -127,11 +169,17 @@ public class MappedListView<S, T> extends AbstractList<T> {
 		};
 	}
 
+	/**
+	 * {@inheritDoc}
+	 */
 	@Override
 	public ListIterator<T> listIterator() {
 		return listIterator(0);
 	}
 
+	/**
+	 * {@inheritDoc}
+	 */
 	@Override
 	public ListIterator<T> listIterator(int index) {
 		return new ListIterator<>() {

pandalib-util/src/main/java/fr/pandacube/lib/util/MemoryUtil.java

@@ -2,48 +2,28 @@ package fr.pandacube.lib.util;
 
 import java.text.DecimalFormat;
 
+/**
+ * This class contains various methods to manipulate and display memory measurements.
+ */
 public class MemoryUtil {
 
-	public enum MemoryUnit {
-		B(1, 1, null),
-		KB(1024, 1000, "k"),
-		MB(1024 * 1024, 1000_000, "M"),
-		GB(1024 * 1024 * 1024, 1000_000_000, "G");
-
-		final long valueTrad;
-		final long valueSI;
-		final String unitMultiplier;
-		
-		public long toUnitRound(long byteCount, boolean si) {
-			return byteCount / value(si);
-		}
-		
-		public double toUnit(long byteCount, boolean si) {
-			return byteCount / (double)value(si);
-		}
-		
-		public long value(boolean si) {
-			return si ? valueSI : valueTrad;
-		}
-		
-		public String unit(boolean si) {
-			return unitMultiplier == null ? "o" : (unitMultiplier + (si ? "o" : "io"));
-		}
-		
-		MemoryUnit(long vTrad, long vSI, String uMult) {
-			valueTrad = vTrad;
-			valueSI = vSI;
-			unitMultiplier = uMult;
-		}
-	}
-
 	private static final DecimalFormat format = new DecimalFormat("#####0.00");
 
-	public static String humanReadableSize(long octet, MemoryUnit roundTo, boolean si) {
+	/**
+	 * Generate a string representation of the provided memory amount, using the provided memory unit and either to use
+	 * SI or traditional units.
+	 * <p>
+	 * <b>This method returns the unit symbol in French.</b>
+	 * @param bytes the memory amount to format.
+	 * @param roundTo the memory unit to convert and display the amount to.
+	 * @param si true to use SI unit, false to use traditional.
+	 * @return a string representation of the provided memory amount.
+	 */
+	public static String humanReadableSize(long bytes, MemoryUnit roundTo, boolean si) {
 		
-		boolean neg = octet < 0;
+		boolean neg = bytes < 0;
 
-		long size = Math.abs(octet);
+		long size = Math.abs(bytes);
 		
 		MemoryUnit unit = roundTo;
 		for (int ui = MemoryUnit.values().length - 1; ui >= 0; ui--) {
@@ -58,7 +38,7 @@ public class MemoryUtil {
 		
 		String dispValue;
 		if (unit == roundTo) {
-			dispValue = ""+unit.toUnitRound(size, si);
+			dispValue = "" + unit.toUnitRound(size, si);
 		}
 		else {
 			dispValue = format.format(unit.toUnit(size, si));
@@ -67,8 +47,116 @@ public class MemoryUtil {
 		return (neg ? "-" : "") + dispValue + unit.unit(si);
 	}
 
-	public static String humanReadableSize(long octet) {
+	/**
-		return humanReadableSize(octet, MemoryUnit.B, false);
+	 * Generate a string representation of the provided memory amount, displayinh the value in byte (as is) and with the
+	 * unit symbol {@code "o"}.
+	 * <p>
+	 * <b>This method returns the unit symbol in French.</b>
+	 * @param bytes the memory amount to format.
+	 * @return a string representation of the provided memory amount.
+	 */
+	public static String humanReadableSize(long bytes) {
+		return humanReadableSize(bytes, MemoryUnit.B, false);
+	}
+
+
+
+	/**
+	 * Enumeration of comonly used unit of memory prefix.
+	 */
+	public enum MemoryUnit {
+
+		/**
+		 * Byte unit.
+		 * <p>
+		 * SI unit: 10<sup>0</sup> = 1B<br>
+		 * Traditional unit: 2<sup>0</sup> = 1B
+		 */
+		B(1, 1, null),
+
+		/**
+		 * Kilobyte unit.
+		 * <p>
+		 * SI unit: 10<sup>3</sup>B = 1000B = 1KB (SI unit)<br>
+		 * Traditional unit: 2<sup>10</sup> = 1024B = 1KiB
+		 */
+		KB(1024, 1000, "k"),
+
+		/**
+		 * Megabyte unit.
+		 * <p>
+		 * SI unit: 10<sup>6</sup>B = 1000000B = 1MB (SI unit)<br>
+		 * Traditional unit: 2<sup>20</sup> = 1048576B = 1MiB
+		 */
+		MB(1024 * 1024, 1000_000, "M"),
+
+		/**
+		 * Gigabyte unit.
+		 * <p>
+		 * SI unit: 10<sup>9</sup>B = 1000000000B = 1GB (SI unit)<br>
+		 * Traditional unit: 2<sup>30</sup> = 1073741824B = 1GiB
+		 */
+		GB(1024 * 1024 * 1024, 1000_000_000, "G");
+
+		/**
+		 * The traditional (power of 2) value of this memory unit, in byte.
+		 */
+		public final long valueTrad;
+
+		/**
+		 * The SI standard (power of 10) value of this memory unit, in byte.
+		 */
+		public final long valueSI;
+
+		/**
+		 * The prefix symbol for this unit.
+		 */
+		public final String unitMultiplier;
+
+		/**
+		 * Converts the provided memory amount to this unit, rounded down (using integer division).
+		 * @param byteCount the memory amount to convert.
+		 * @param si true to use SI unit, false to use traditional.
+		 * @return the converted value.
+		 */
+		public long toUnitRound(long byteCount, boolean si) {
+			return byteCount / value(si);
+		}
+
+		/**
+		 * Converts the provided memory amount to this unit.
+		 * @param byteCount the memory amount to convert.
+		 * @param si true to use SI unit, false to use traditional.
+		 * @return the converted value.
+		 */
+		public double toUnit(long byteCount, boolean si) {
+			return byteCount / (double)value(si);
+		}
+
+		/**
+		 * The value of this memory unit, in byte, in either SI or traditional unit.
+		 * @param si true to use SI unit, false to use traditional.
+		 * @return value of this memory unit, in byte.
+		 */
+		public long value(boolean si) {
+			return si ? valueSI : valueTrad;
+		}
+
+		/**
+		 * Returns the full unit symbol of this unit, that is the prefix {@link #unitMultiplier} concatenated with
+		 * either "o" for SI unit or "io" to traditional unit.
+		 * @param si true to use SI unit, false to use traditional.
+		 * @return the full unit symbol of this unit.
+		 */
+		public String unit(boolean si) {
+			return unitMultiplier == null ? "o" : (unitMultiplier + (si ? "o" : "io"));
+		}
+
+		MemoryUnit(long vTrad, long vSI, String uMult) {
+			valueTrad = vTrad;
+			valueSI = vSI;
+			unitMultiplier = uMult;
+		}
 	}
 	
 }

pandalib-util/src/main/java/fr/pandacube/lib/util/MinecraftVersion.java

@@ -8,52 +8,96 @@ import java.util.List;
 import java.util.Map;
 import java.util.Set;
 
+/**
+ * Enumeration of all known, post Netty-rewrite (1.7.2+), stable Minecraft Java versions.
+ * <p>
+ * It provides various utility methods to nicely display a set of Minecraft version (for instance "1.13.x",
+ * "1.16-1.16.3", "1.8.x and 1.9", "1.18.1 or 1.18.2")
+ * <p>
+ * Note that this enum uses one value to represent every Minecraft version using the same protocol version number.
+ */
 public enum MinecraftVersion {
+	/** Minecraft versions 1.7.2 to 1.7.5, protocol version 4. */
 	v1_7_2_to_1_7_5(4, "1.7.2-1.7.5"),
+	/** Minecraft versions 1.7.6 to 1.7.10, protocol version 5. */
 	v1_7_6_to_1_7_10(5, "1.7.6-1.7.10"),
 
+	/** Minecraft versions 1.8.x, protocol version 47. */
 	v1_8(47, "1.8.x"),
 
+	/** Minecraft version 1.9, protocol version 107. */
 	v1_9(107, "1.9"),
+	/** Minecraft version 1.9.1, protocol version 108. */
 	v1_9_1(108, "1.9.1"),
+	/** Minecraft version 1.9.2, protocol version 109. */
 	v1_9_2(109, "1.9.2"),
+	/** Minecraft versions 1.9.3 and 1.9.4, protocol version 110. */
 	v1_9_3_to_1_9_4(110, "1.9.3", "1.9.4"),
 
+	/** Minecraft versions 1.10.x, protocol version 210. */
 	v1_10(210, "1.10.x"),
 
+	/** Minecraft version 1.11, protocol version 315. */
 	v1_11(315, "1.11"),
+	/** Minecraft versions 1.11.1 and 1.11.2, protocol version 316. */
 	v1_11_1_to_1_11_2(316, "1.11.1", "1.11.2"),
 
+	/** Minecraft version 1.12, protocol version 335. */
 	v1_12(335, "1.12"),
+	/** Minecraft version 1.12.1, protocol version 338. */
 	v1_12_1(338, "1.12.1"),
+	/** Minecraft version 1.12.2, protocol version 340. */
 	v1_12_2(340, "1.12.2"),
 
+	/** Minecraft version 1.13, protocol version 393. */
 	v1_13(393, "1.13"),
+	/** Minecraft version 1.13.1, protocol version 401. */
 	v1_13_1(401, "1.13.1"),
+	/** Minecraft version 1.13.2, protocol version 404. */
 	v1_13_2(404, "1.13.2"),
 
+	/** Minecraft version 1.14, protocol version 477. */
 	v1_14(477, "1.14"),
+	/** Minecraft version 1.14.1, protocol version 480. */
 	v1_14_1(480, "1.14.1"),
+	/** Minecraft version 1.14.2, protocol version 485. */
 	v1_14_2(485, "1.14.2"),
+	/** Minecraft version 1.14.3, protocol version 490. */
 	v1_14_3(490, "1.14.3"),
+	/** Minecraft version 1.14.4, protocol version 498. */
 	v1_14_4(498, "1.14.4"),
 
+	/** Minecraft version 1.15, protocol version 573. */
 	v1_15(573, "1.15"),
+	/** Minecraft version 1.15.1, protocol version 575. */
 	v1_15_1(575, "1.15.1"),
+	/** Minecraft version 1.15.2, protocol version 578. */
 	v1_15_2(578, "1.15.2"),
 
+	/** Minecraft version 1.16, protocol version 735. */
 	v1_16(735, "1.16"),
+	/** Minecraft version 1.16.1, protocol version 736. */
 	v1_16_1(736, "1.16.1"),
+	/** Minecraft version 1.16.2, protocol version 751. */
 	v1_16_2(751, "1.16.2"),
+	/** Minecraft version 1.16.3, protocol version 753. */
 	v1_16_3(753, "1.16.3"),
+	/** Minecraft versions 1.16.4 and 1.16.5, protocol version 754. */
 	v1_16_4_to_1_16_5(754, "1.16.4", "1.16.5"),
 
+	/** Minecraft version 1.17, protocol version 755. */
 	v1_17(755, "1.17"),
+	/** Minecraft version 1.17.1, protocol version 756. */
 	v1_17_1(756, "1.17.1"),
 
+	/** Minecraft versions 1.18 and 1.18.1, protocol version 757. */
 	v1_18_to_1_18_1(757, "1.18", "1.18.1"),
+	/** Minecraft version 1.18.2, protocol version 758. */
 	v1_18_2(758, "1.18.2"),
+
+	/** Minecraft version 1.19, protocol version 759. */
 	v1_19(759, "1.19"),
+	/** Minecraft version 1.19.1, protocol version 759. */
 	v1_19_1(760, "1.19.1");
 
 	// IMPORTANT: don't forget to update the versionMergeDisplay value when adding a new version;
@@ -156,45 +200,144 @@ public enum MinecraftVersion {
 	}
 
 
-	public final int id;
+	/**
-	public final List<String> versionDisplay;
+	 * The protocol version number of this Minecraft version.
+	 */
+	public final int protocolVersionNumber;
+	/**
+	 * All Minecraft version supported by this protocol version number.
+	 */
+	public final List<String> versionsDisplay;
 
-	MinecraftVersion(int v, String... d) {
+	MinecraftVersion(int protocolVersionNumber, String... versionsDisplay) {
-		id = v;
+		this.protocolVersionNumber = protocolVersionNumber;
-		versionDisplay = Arrays.asList(d);
+		this.versionsDisplay = Arrays.asList(versionsDisplay);
 	}
 
 	@Override
 	public String toString() {
-		return toStringAnd();
+		return name() + "{protocol=" + protocolVersionNumber + ", toString(\"and\")=" + toString("and") + "}";
 	}
 
+	/**
+	 * Returns a string representation of all the Minecraft version of this enum value, using
+	 * {@link StringUtil#joinGrammatically(CharSequence, CharSequence, List)}.
+	 *
+	 * @param finalWordSeparator the word separator between the two last versions in the returned string, like "and",
+	 *                           "or" or any other word of any language. The spaces before and after are already
+	 *                           concatenated.
+	 * @return a string representation of this {@link MinecraftVersion}.
+	 */
+	public String toString(String finalWordSeparator) {
+		return StringUtil.joinGrammatically(", ", " " + finalWordSeparator + " ", versionsDisplay);
+	}
+
+	/**
+	 * Returns a string representation of all the Minecraft version of this enum value, using
+	 * {@link StringUtil#joinGrammatically(CharSequence, CharSequence, List)} with the gramatical word "et"
+	 * ("and" in french).
+	 *
+	 * @return a string representation of this {@link MinecraftVersion}.
+	 * @deprecated it uses the hardcoded french word "et" as the final word separator.
+	 *             Use {@link #displayOptimizedListOfVersions(List, String)} with "et" as the last parameter instead.
+	 */
+	@Deprecated
 	public String toStringAnd() {
-		return StringUtil.joinGrammatically(", ", " et ", versionDisplay);
+		return toString("et");
 	}
 
+	/**
+	 * Returns a string representation of all the Minecraft version of this enum value, using
+	 * {@link StringUtil#joinGrammatically(CharSequence, CharSequence, List)} with the gramatical word "ou"
+	 * ("or" in french).
+	 *
+	 * @return a string representation of this {@link MinecraftVersion}.
+	 * @deprecated it uses the hardcoded french word "ou" as the final word separator.
+	 *             Use {@link #displayOptimizedListOfVersions(List, String)} with "ou" as the last parameter instead.
+	 */
+	@Deprecated
 	public String toStringOr() {
-		return StringUtil.joinGrammatically(", ", " ou ", versionDisplay);
+		return toString("ou");
 	}
 
-	public static MinecraftVersion getVersion(int v) {
-		for (MinecraftVersion mcV : values())
-			if (mcV.id == v) return mcV;
 
+
+
+
+
+
+
+	/**
+	 * Gets the {@link MinecraftVersion} instance associated with the provided protocol version number.
+	 *
+	 * @param protocolVersionNumber the protocol version number
+	 * @return the {@link MinecraftVersion} instance associated with the provided protocol version number, or null if
+	 *         there is none.
+	 */
+	public static MinecraftVersion getVersion(int protocolVersionNumber) {
+		for (MinecraftVersion mcV : values())
+			if (mcV.protocolVersionNumber == protocolVersionNumber) return mcV;
 		return null;
 	}
 
 
+	/**
+	 * Generate a string representation of the provided list of version, using
+	 * {@link StringUtil#joinGrammatically(CharSequence, CharSequence, List)}.
+	 *
+	 * @param versions the minecraft versions to list
+	 * @param finalWordSeparator the word separator between the two last versions in the returned string, like "and",
+	 *                           "or" or any other word of any language. The spaces before and after are already
+	 *                           concatenated.
+	 * @return a string representation of the provided list of version.
+	 */
+	public static String displayOptimizedListOfVersions(List<MinecraftVersion> versions, String finalWordSeparator) {
+		return StringUtil.joinGrammatically(", ", " " + finalWordSeparator + " ", getVersionsDisplayList(versions));
+	}
 
+	/**
+	 * Generate a string representation of the provided list of version, using
+	 * {@link StringUtil#joinGrammatically(CharSequence, CharSequence, List)} with the gramatical word "et"
+	 * ("and" in french).
+	 *
+	 * @param versions the minecraft versions to list
+	 * @return a string representation of the provided list of version.
+	 * @deprecated it uses the hardcoded french word "et" as the final word separator.
+	 *             Use {@link #displayOptimizedListOfVersions(List, String)} with "et" as the last parameter instead.
+	 */
+	@Deprecated
 	public static String displayOptimizedListOfVersionsAnd(List<MinecraftVersion> versions) {
-		return StringUtil.joinGrammatically(", ", " et ", getVersionsDisplayList(versions));
+		return displayOptimizedListOfVersions(versions, "et");
 	}
 
+	/**
+	 * Generate a string representation of the provided list of version, using
+	 * {@link StringUtil#joinGrammatically(CharSequence, CharSequence, List)} with the gramatical word "ou"
+	 * ("or" in french).
+	 *
+	 * @param versions the minecraft versions to list
+	 * @return a string representation of the provided list of version.
+	 * @deprecated it uses the hardcoded french word "ou" as the final word separator.
+	 *             Use {@link #displayOptimizedListOfVersions(List, String)} with "ou" as the last parameter instead.
+	 */
+	@Deprecated
 	public static String displayOptimizedListOfVersionsOr(List<MinecraftVersion> versions) {
-		return StringUtil.joinGrammatically(", ", " ou ", getVersionsDisplayList(versions));
+		return displayOptimizedListOfVersions(versions, "ou");
 	}
 
-	
+	/**
+	 * Returns an optimized list of string representation of Minecraft version, that represent the provided list of
+	 * Minecraft version.
+	 * <p>
+	 * This methods try to merge successive Minecraft version into a single string: for instance, all versions from 1.18
+	 * to 1.18.2 are represented by the string "1.18.x"; all version from 1.14.1 to 1.14.4 are represented by the string
+	 * "1.14.1-1.14.4".
+	 * <p>
+	 * All possible merges of {@link MinecraftVersion} are listed in the static initializer of this enum.
+	 *
+	 * @param vList the {@link List} of {@link MinecraftVersion}
+	 * @return an optimized list of string representation of Minecraft version.
+	 */
 	public static List<String> getVersionsDisplayList(List<MinecraftVersion> vList) {
 		if (vList == null)
 			return new ArrayList<>();
@@ -218,7 +361,7 @@ public enum MinecraftVersion {
 			}
 			
 			if (vSubSet.size() == 1) {
-				ret.addAll(values()[i].versionDisplay);
+				ret.addAll(values()[i].versionsDisplay);
 			}
 			else {
 				ret.addAll(versionMergeDisplay.get(vSubSet));

pandalib-util/src/main/java/fr/pandacube/lib/util/MinecraftWebUtil.java

@@ -1,16 +1,26 @@
 package fr.pandacube.lib.util;
 
+/**
+ * Provides utility methods around Minecraft and Web stuff.
+ */
 public class MinecraftWebUtil {
 
-	
-	
-
 	/**
-		Convert a legacy Minecraft color coded String into HTML Format.
+	 * Convert a legacy Minecraft color coded String into HTML Format.
+	 * <p>
+	 * Each colored part of the text will be contained in a {@code <span>} tag with {@code class="cX"} where {@code X}
+	 * is the color code from 0 to F in uppercase.
+	 * The bold, striked, underlined and italic parts will be contained in a {@code <span>} tag with respectively the
+	 * classes {@code cL}, {@code cM}, {@code cN} and {@code cO}.
+	 * Some CSS properties are needed to apply the colors to the CSS classes.
+	 * @param chatcolorPrefix the prefix used for the color codes
+	 * @param legacyText the legacy text to convert to HTML.
+	 * @return The text formated in HTML.
+	 * @implNote the current implementation does not yet supports the RGB colors.
 	*/
-	// TODO update to support RGB colors (Bungee and Essentials notation).
+	// TODO update to support RGB colors (Bungee and Essentials notation). (see JS implementation at https://www.pandacube.fr/assets/js/global.js )
-	// See JavaScript implementation at https://www.pandacube.fr/assets/js/global.js
+	// TODO moves this to pandalib-chat and use Adventure API to help serializing to HTML
-	public static String fromMinecraftColorCodeToHTML(char code_prefix, String ligne)
+	public static String fromMinecraftColorCodeToHTML(char chatcolorPrefix, String legacyText)
 	{
 		String color_char = "0123456789abcdefr";
 		
@@ -18,12 +28,12 @@ public class MinecraftWebUtil {
 		char currentColor = 'r';
 		boolean bold = false, italic = false, underlined = false, strikethrough = false;
 		
-		for (int i=0; i<ligne.length(); i++) {
+		for (int i=0; i<legacyText.length(); i++) {
-			char c = ligne.charAt(i);
+			char c = legacyText.charAt(i);
 			
-			if (c == code_prefix && (i<ligne.length()-1)) {
+			if (c == chatcolorPrefix && (i<legacyText.length()-1)) {
 				i++;
-				c = ligne.charAt(i);
+				c = legacyText.charAt(i);
 				if (color_char.contains(String.valueOf(Character.toLowerCase(c)))) {
 					if (bold) {
 						builder.append("</span>");
@@ -75,7 +85,7 @@ public class MinecraftWebUtil {
 					}
 				}
 				else {
-					builder.append(code_prefix + c);
+					builder.append(chatcolorPrefix + c);
 				}
 				
 				

pandalib-util/src/main/java/fr/pandacube/lib/util/OfflineUUID.java

@@ -5,13 +5,37 @@ import java.util.Objects;
 import java.util.Scanner;
 import java.util.UUID;
 
+/**
+ * Utility class and program that generate offline UUIDs for provided player names.
+ * <p>
+ * You can generate the UUID programatically using {@link #getFromNickName(String)} and
+ * {@link #getFromNickNames(String[])}.
+ *
+ * To use this class as a program, type
+ * <pre>
+ *     java -cp&lt;anyClassPathContainingThisClass&gt; fr.pandacube.lib.util.OfflineUUID [playernames...]
+ * </pre>
+ * Each argument will be interpreted as a player name. If there is no argument, the program will wait for them in the
+ * input stream.
+ * For each player name, the program will print the player name, a {@code tab} character, the UUID and a line separator.
+ */
 public class OfflineUUID {
 
+	/**
+	 * Generate the offline {@link UUID} of the provided player name.
+	 * @param nickname the player name to optain the offline UUID from.
+	 * @return the offline {@link UUID} of the provided player name.
+	 */
 	public static UUID getFromNickName(String nickname) {
 		byte[] from_str = ("OfflinePlayer:" + nickname).getBytes(StandardCharsets.UTF_8);
 		return UUID.nameUUIDFromBytes(from_str);
 	}
 
+	/**
+	 * Generate the offline {@link UUID}s of the provided player names.
+	 * @param nicknames an array of player name to optain the offline UUIDs from.
+	 * @return the offline {@link UUID}s of the provided player name in an array, at the same order as the input.
+	 */
 	public static UUID[] getFromNickNames(String[] nicknames) {
 		Objects.requireNonNull(nicknames);
 
@@ -22,24 +46,25 @@ public class OfflineUUID {
 	}
 
 
-	
+	/**
-	
+	 * Main method for this class.
-	
+	 * @param args the arguments. One argument is one player name.
+	 */
 	public static void main(String[] args) {
 		if (args.length == 0) {
 			try (Scanner s = new Scanner(System.in)) {
 				for(;;) {
-					System.out.print("Please input a player name: ");
+					System.err.print("Please input a player name: ");
-					if (!s.hasNext())
+					if (!s.hasNextLine())
 						break;
 					String line = s.nextLine();
-					System.out.println(getFromNickName(line));
+					System.out.println(line + "\t" + getFromNickName(line));
 				}
 			}
 		}
 		else {
 			for (String arg : args)
-				System.out.println("" + arg + ":" + getFromNickName(arg));
+				System.out.println(arg + "\t" + getFromNickName(arg));
 		}
 	}
 }

pandalib-util/src/main/java/fr/pandacube/lib/util/RandomUtil.java

@@ -3,67 +3,118 @@ package fr.pandacube.lib.util;
 import java.util.List;
 import java.util.Random;
 import java.util.Set;
+import java.util.random.RandomGenerator;
 
+/**
+ * Utility class to generate random things.
+ */
 public class RandomUtil {
 
+	/**
+	 * The unique {@link Random} instance used in this class. Can also be used else where when needed.
+	 */
 	public static final Random rand = new Random();
 
+	/**
+	 * Returns a randomly generated integer between {@code minInclu} included and {@code maxExclu} excluded.
+	 * @param minInclu the minimum value, included.
+	 * @param maxExclu the maximum value, excluded.
+	 * @return a random number between {@code minInclu} included and {@code maxExclu} excluded.
+	 * @see Random#nextInt(int, int) 
+	 * @throws IllegalArgumentException if {@code minInclu} is greater than {@code maxExclu}.
+	 * @deprecated Use {@link Random#nextInt(int, int)} instead.
+	 */
+	@Deprecated(forRemoval = true)
 	public static int nextIntBetween(int minInclu, int maxExclu) {
-		return rand.nextInt(maxExclu - minInclu) + minInclu;
+		return rand.nextInt(minInclu, maxExclu);
-	}
-
-	public static double nextDoubleBetween(double minInclu, double maxExclu) {
-		return rand.nextDouble() * (maxExclu - minInclu) + minInclu;
-	}
-	
-	public static <T> T arrayElement(T[] arr) {
-		return (arr == null || arr.length == 0) ? null : arr[rand.nextInt(arr.length)];
-	}
-	
-	public static <T> T listElement(List<T> arr) {
-		return (arr == null || arr.isEmpty()) ? null : arr.get(rand.nextInt(arr.size()));
-	}
-	
-	public static char stringChar(String arr) {
-		return (arr == null || arr.isEmpty()) ? '\0' : arr.charAt(rand.nextInt(arr.length()));
 	}
 
 	/**
-	 * Returns a random value from a set.
+	 * Returns a randomly generated double between {@code minInclu} included and {@code maxExclu} excluded.
-	 * 
+	 * @param minInclu the minimum value, included.
-	 * May not be optimized (Actually O(n) )
+	 * @param maxExclu the maximum value, excluded.
-	 * @param set the Set from which to pick a random value
+	 * @return a random number between {@code minInclu} included and {@code maxExclu} excluded.
-	 * @return a random value from the set
+	 * @see Random#nextDouble(double, double)
+	 * @throws IllegalArgumentException if {@code minInclu} is greater than {@code maxExclu}.
+	 * @deprecated Use {@link Random#nextDouble(double, double)} instead.
+	 */
+	@Deprecated(forRemoval = true)
+	public static double nextDoubleBetween(double minInclu, double maxExclu) {
+		return rand.nextDouble(minInclu, maxExclu);
+	}
+
+	/**
+	 * Returns a random element from the provided array.
+	 * @param array the array in whith to pick a value randomly.
+	 * @return the value randomly picked from the array, or null if the array is null or empty.
+	 * @param <T> the type of the array elements.
+	 * @see Random#nextInt(int)
+	 */
+	public static <T> T arrayElement(T[] array) {
+		return (array == null || array.length == 0) ? null : array[rand.nextInt(array.length)];
+	}
+
+	/**
+	 * Returns a random element from the provided list.
+	 * @param list the list in whith to pick a value randomly.
+	 * @return the value randomly picked from the list, or null if the array is null or empty.
+	 * @param <T> the type of the list elements.
+	 * @see Random#nextInt(int)
+	 */
+	public static <T> T listElement(List<T> list) {
+		return (list == null || list.isEmpty()) ? null : list.get(rand.nextInt(list.size()));
+	}
+
+	/**
+	 * Returns a random character from the provided string.
+	 * @param str the string in whith to pick a character randomly.
+	 * @return the character randomly picked from the string, or {@code '\0'} if the string is null or empty.
+	 * @see Random#nextInt(int)
+	 */
+	public static char stringChar(String str) {
+		return (str == null || str.isEmpty()) ? '\0' : str.charAt(rand.nextInt(str.length()));
+	}
+	
+	/**
+	 * Returns a random value from the provided set.
+	 * @param set the set in which to pick a value randomly.
+	 * @return the value randomly picked from the list, or null if the set is null or empty.
+	 * @param <T> the type of the set elements.
+	 * @implNote The current implementation uses the iterator of the set to pick a random value, since there is no way
+	 * to directly pick a value using an index.
+	 * @throws IllegalStateException if the set has reduced in size during the execution of this method, making the
+	 * iterator reaching the end of the set before getting the value the random generator picked.
 	 */
 	public static <T> T setElement(Set<T> set) {
-		if (set.isEmpty())
+		if (set == null || set.isEmpty())
-			throw new IllegalArgumentException("set is empty");
+			return null;
 		int retI = rand.nextInt(set.size()), i = 0;
 		for (T e : set) {
 			if (retI == i)
 				return e;
 			i++;
 		}
-		throw new RuntimeException("Should never go to this line of code");
+		throw new IllegalStateException("Should never go to this line of code");
 	}
 	
 	/**
 	 * Return a value between 0 and the number of parameter minus 1, using the provided frequencies.
 	 * 
 	 * The probability of each value to be returned depends of the frequencies provided.
-	 * @param f the frequencies of each entries
+	 * @param frequencies the frequencies of each entries
-	 * @return the index of an entry, or -1 if it is unable to pick anything (all the frequencies are 0 or there is not provided frequency)
+	 * @return the index of an entry, or -1 if it is unable to pick anything (all the frequencies are 0 or there is no provided frequency)
+	 * @throws IllegalArgumentException if frequencies is null.
 	 */
-	public static int randomIndexOfFrequencies(double... f) {
+	public static int randomIndexOfFrequencies(double... frequencies) {
-		if (f == null)
+		if (frequencies == null)
-			throw new IllegalArgumentException("f cannot be null");
+			throw new IllegalArgumentException("frequencies cannot be null");
-		int n = f.length;
+		int n = frequencies.length;
 		double[] fSums = new double[n];
 		double sum = 0;
 		for (int i = 0; i < n; i++) {
-			if (f[i] < 0)
+			if (frequencies[i] < 0)
-				throw new IllegalArgumentException("f[" + i + "] cannot be negative.");
+				throw new IllegalArgumentException("frequencies[" + i + "] cannot be negative.");
-			fSums[i] = (sum += f[i]);
+			fSums[i] = (sum += frequencies[i]);
 		}
 		double r = rand.nextDouble() * sum;
 		for (int i = 0; i < n; i++) {
@@ -74,20 +125,47 @@ public class RandomUtil {
 	}
 
 
-	
+	/**
-	
+	 * A set of characters representing all the lowercase letters of the latin alphabet (only in the ASCII table).
-	
+	 */
-
 	public static final String PASSWORD_CHARSET_LATIN_LOWERCASE = "abcdefghijklmnopqrstuvwxyz";
+
+	/**
+	 * A set of characters representing all the uppercase letters of the latin alphabet (only in the ASCII table).
+	 */
 	public static final String PASSWORD_CHARSET_LATIN_UPPERCASE = PASSWORD_CHARSET_LATIN_LOWERCASE.toUpperCase();
+
+	/**
+	 * A set of characters representing all the number digits, from 0 to 9.
+	 */
 	public static final String PASSWORD_CHARSET_DIGIT = "0123456789";
+
+	/**
+	 * A set of characters representing some visible special characters in the ASCII table.
+	 */
 	public static final String PASSWORD_CHARSET_SPECIAL = "@#+*/-;:,.?!='()[]{}&";
+
+	/**
+	 * A set of characters representing uppercase and lowercase latin alphabet letters and digits, exclusing some that
+	 * can be confusing to read (like {@code iIl1} or {@code oO0}).
+	 */
 	public static final String PASSWORD_CHARSET_NO_ANBIGUITY = "abcdefghkmnpqrstwxyzACDEFGHKLMNPQRSTWXYZ2345679";
 
+	/**
+	 * Generate a random password of the provided length, using the characters listed in {@link #PASSWORD_CHARSET_NO_ANBIGUITY}
+	 * @param length the length of the generated password.
+	 * @return the generated password.
+	 */
 	public static String randomPassword(int length) {
 		return randomPassword(length, PASSWORD_CHARSET_NO_ANBIGUITY);
 	}
 
+	/**
+	 * Generate a random password of the provided length, using the provided characters in a string.
+	 * @param length the length of the generated password.
+	 * @param charset the characters to use. It’s possible to use of the {@code PASSWORD_*} static strings in this class.
+	 * @return the generated password.
+	 */
 	public static String randomPassword(int length, String charset) {
 		char[] pw = new char[length];
 		for (int i = 0; i < length; i++) {

pandalib-util/src/main/java/fr/pandacube/lib/util/StringUtil.java

@@ -3,7 +3,16 @@ package fr.pandacube.lib.util;
 import java.util.Arrays;
 import java.util.List;
 
+/**
+ * Provides various methods to manipulate Strings.
+ */
 public class StringUtil {
+
+	/**
+	 * Format the provided double, omitting the decimal part if the provided double is strictly equals to a long value.
+	 * @param d the value to convert to string.
+	 * @return a string representation of the double value.
+	 */
 	public static String formatDouble(double d) {
 		if (d == (long) d)
 			return String.format("%d", (long) d);
@@ -11,34 +20,62 @@ public class StringUtil {
 	}
 
 	/**
-	 * @param s Chaine de caractère à parcourir
+	 * Counts the number of occurence of a speficied character in a string.
-	 * @param c_match le caractère dont on doit retourner le nombre d'occurence
+	 * @param string the character sequence to search into.
-	 * @return nombre d'occurence de <b>c_match</b> dans <b>s</b>
+	 * @param character the character to count.
+	 * @return the number of occurence of
+	 * @deprecated Because it uses snake_case naming convention. Use {@link #countOccurences(CharSequence, char)} instead.
 	 */
-	public static int char_count(CharSequence s, char c_match) {
+	@Deprecated(forRemoval = true, since = "2022-07-26")
-		char[] chars = s.toString().toCharArray();
+	public static int char_count(CharSequence string, char character) {
+		return countOccurences(string, character);
+	}
+
+	/**
+	 * Counts the number of occurence of a speficied character in a string.
+	 * @param string the character sequence to search into.
+	 * @param character the character to count.
+	 * @return the number of occurence of
+	 */
+	public static int countOccurences(CharSequence string, char character) {
 		int count = 0;
-		for (char c : chars)
+		for (char c : string.toString().toCharArray()) {
-			if (c == c_match) count++;
+			if (c == character) {
+				count++;
+			}
+		}
 		return count;
 	}
 
 
-	
+	/**
-	
+	 * Do like {@link String#join(CharSequence, Iterable)}, but the last separator is different than the others.
-	public static String joinGrammatically(CharSequence sep1, CharSequence sepFinal, List<String> strings) {
+	 * It is usedful when enumerating thins in a sentense, for instance : <code>"a thing<u>, </u>a thing<u> and </u>a thing"</code>
+	 * (the coma being the usual separator, and {@code " and "} being the final separator).
+	 * @param regularSeparator the separator used everywhere except between the two last strings to join.
+	 * @param finalSeparator the separator used between the two last strings to join.
+	 * @param strings the strings to join.
+	 * @return a new string will all the provided {@code strings} joined using the separators.
+	 */
+	public static String joinGrammatically(CharSequence regularSeparator, CharSequence finalSeparator, List<String> strings) {
 	    int size = strings == null ? 0 : strings.size();
-	    return size == 0 ? "" : size == 1 ? strings.get(0) : String.join(sep1, strings.subList(0, --size)) + sepFinal + strings.get(size);
+		return switch (size) {
+			case 0 -> "";
+			case 1 -> strings.get(0);
+			default -> String.join(regularSeparator, strings.subList(0, --size)) + finalSeparator + strings.get(size);
+		};
 	}
 
 
-	
+	/**
-	
+	 * Create a {@link String} that repeats the base character n times.
-	
+	 * @param base the base character.
-	
+	 * @param n the number of repetition.
-	public static String repeat(char base, int count) {
+	 * @return a {@link String} that repeats the base character n times.
-		char[] chars = new char[count];
+	 */
+	public static String repeat(char base, int n) {
+		char[] chars = new char[n];
 		Arrays.fill(chars, base);
-		return new String(chars);
+		return String.valueOf(chars);
 	}
 }

pandalib-util/src/main/java/fr/pandacube/lib/util/ThrowableUtil.java

@@ -6,16 +6,23 @@ import java.io.PrintStream;
 import java.lang.reflect.InvocationTargetException;
 import java.nio.charset.StandardCharsets;
 
+/**
+ * Utility class to easily manipulate {@link Throwable}s.
+ */
 public class ThrowableUtil {
 
-	
+	/**
+	 * Convert a {@link Throwable} into a {@link String} using the {@link Throwable#printStackTrace(PrintStream)} method,
+	 * so the returned string contains the full stack trace.
+	 * @param t the {@link Throwable}
+	 * @return a {@link String} containing the full stack thace of the provided {@link Throwable}.
+	 */
 	public static String stacktraceToString(Throwable t) {
 		if (t == null) return null;
-		try (ByteArrayOutputStream os = new ByteArrayOutputStream()) {
+		try (ByteArrayOutputStream os = new ByteArrayOutputStream();
-			try (PrintStream ps = new PrintStream(os, false, StandardCharsets.UTF_8)) {
+				PrintStream ps = new PrintStream(os, false, StandardCharsets.UTF_8)) {
 			t.printStackTrace(ps);
 			ps.flush();
-			}
 			return os.toString(StandardCharsets.UTF_8);
 		} catch (IOException e) {
 			return null;
@@ -33,6 +40,7 @@ public class ThrowableUtil {
 	 * @param supp the {@link SupplierException} to run and get the value from.
 	 * @return the value returned by the provided supplier.
 	 * @throws RuntimeException if the provided {@link SupplierException} throws a checked exception.
+	 * @param <T> the type of the returned object
 	 */
 	public static <T> T wrapEx(SupplierException<T> supp) {
 		try {
@@ -58,10 +66,12 @@ public class ThrowableUtil {
 
 
 	/**
-	 * Wraps a {@link SupplierException} into a try catch.
+	 * Wraps a {@link SupplierException} into a try catch, with special handling of subclasses of
+	 * {@link ReflectiveOperationException}.
 	 * @param supp the {@link SupplierException} to run and get the value from.
 	 * @return the value returned by the provided supplier.
 	 * @throws RuntimeException if the provided {@link SupplierException} throws a checked exception.
+	 * @param <T> the type of the returned object
 	 */
 	public static <T> T wrapReflectEx(SupplierException<T> supp) {
 		try {
@@ -72,7 +82,8 @@ public class ThrowableUtil {
 	}
 
 	/**
-	 * Wraps a {@link RunnableException} into a try catch.
+	 * Wraps a {@link RunnableException} into a try catch with special handling of subclasses of
+	 * {@link ReflectiveOperationException}.
 	 * @param run the {@link RunnableException} to run.
 	 * @throws RuntimeException if the provided {@link RunnableException} throws a checked exception.
 	 */
@@ -87,20 +98,29 @@ public class ThrowableUtil {
 
 
 	/**
-	 * A supplier that can possibly throw a checked exception
+	 * A supplier that can possibly throw a checked exception.
 	 */
 	@FunctionalInterface
 	public interface SupplierException<T> {
+		/**
+		 * Gets a result.
+		 * @return a result.
+		 * @throws Exception if implementation failed to run.
+		 */
 		T get() throws Exception;
 	}
 
 
 
 	/**
-	 * A runnable that can possibly throw a checked exception
+	 * A runnable that can possibly throw a checked exception.
 	 */
 	@FunctionalInterface
 	public interface RunnableException {
+		/**
+		 * Run any code implemented.
+		 * @throws Exception if implementation failed to run.
+		 */
 		void run() throws Exception;
 	}
 

pandalib-util/src/main/java/fr/pandacube/lib/util/Tick.java

@@ -1,10 +1,13 @@
 package fr.pandacube.lib.util;
 
+/**
+ * Provides methods related to Minecraft Java server ticks.
+ */
 public class Tick {
 	
 	
 	/**
-	 * Returns the number of tick is the provided duration, in second
+	 * Returns the number of tick is the provided number of seconds.
 	 * @param seconds the duration in second
 	 * @return the same duration as provided, but in Minecraft server ticks
 	 */
@@ -13,7 +16,7 @@ public class Tick {
 	}
 	
 	/**
-	 * Returns the number of tick is the provided duration, in second
+	 * Returns the number of tick is the provided number of minutes.
 	 * @param minutes the duration in minutes
 	 * @return the same duration as provided, but in Minecraft server ticks
 	 */

pandalib-util/src/main/java/fr/pandacube/lib/util/TimeUtil.java

@@ -7,7 +7,6 @@ import java.util.Arrays;
 import java.util.Calendar;
 import java.util.Comparator;
 import java.util.GregorianCalendar;
-import java.util.List;
 import java.util.Locale;
 import java.util.TimeZone;
 import java.util.concurrent.TimeUnit;
@@ -17,38 +16,68 @@ import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 import java.util.stream.Collectors;
 
+/**
+ * Utility class providing methods to display human readable time and duration, and parse duration strings.
+ *
+ * The methods that return date and daytime are hardcoded in French.
+ */
 public class TimeUtil {
 	
 
-	private static final DateTimeFormatter cmpDayOfWeekFormatter = DateTimeFormatter.ofPattern("EEE", Locale.getDefault());
+	private static final DateTimeFormatter cmpDayOfWeekFormatter = DateTimeFormatter.ofPattern("EEE", Locale.FRENCH);
-	private static final DateTimeFormatter dayOfWeekFormatter = DateTimeFormatter.ofPattern("EEEE", Locale.getDefault());
+	private static final DateTimeFormatter dayOfWeekFormatter = DateTimeFormatter.ofPattern("EEEE", Locale.FRENCH);
-	private static final DateTimeFormatter dayOfMonthFormatter = DateTimeFormatter.ofPattern("d", Locale.getDefault());
+	private static final DateTimeFormatter dayOfMonthFormatter = DateTimeFormatter.ofPattern("d", Locale.FRENCH);
-	private static final DateTimeFormatter cmpMonthFormatter = DateTimeFormatter.ofPattern("MMM", Locale.getDefault());
+	private static final DateTimeFormatter cmpMonthFormatter = DateTimeFormatter.ofPattern("MMM", Locale.FRENCH);
-	private static final DateTimeFormatter monthFormatter = DateTimeFormatter.ofPattern("MMMM", Locale.getDefault());
+	private static final DateTimeFormatter monthFormatter = DateTimeFormatter.ofPattern("MMMM", Locale.FRENCH);
-	private static final DateTimeFormatter yearFormatter = DateTimeFormatter.ofPattern("uuuu", Locale.getDefault());
+	private static final DateTimeFormatter yearFormatter = DateTimeFormatter.ofPattern("uuuu", Locale.FRENCH);
 
-	private static final DateTimeFormatter HMSFormatter = DateTimeFormatter.ofPattern("HH:mm:ss", Locale.getDefault());
+	private static final DateTimeFormatter HMSFormatter = DateTimeFormatter.ofPattern("HH:mm:ss", Locale.FRENCH);
-	private static final DateTimeFormatter HMFormatter = DateTimeFormatter.ofPattern("HH:mm", Locale.getDefault());
+	private static final DateTimeFormatter HMFormatter = DateTimeFormatter.ofPattern("HH:mm", Locale.FRENCH);
-	private static final DateTimeFormatter HFormatter = DateTimeFormatter.ofPattern("H'h'", Locale.getDefault());
+	private static final DateTimeFormatter HFormatter = DateTimeFormatter.ofPattern("H'h'", Locale.FRENCH);
 
 
-	public static String relativeDateFr(long displayTime, boolean showSeconds, boolean compactWords) {
+	/**
-		return relativeDateFr(displayTime,
+	 * Provides a human readable date of the provided time, with ability to adapt the text relatively to the current
+	 * time (for instance "il y a 13 minutes" (french for "13 minutes ago"))
+	 * <p>
+	 * <b>This method renders the text in French.</b>
+	 *
+	 * @param time the timestamp in milliseconds of the time to diplay.
+	 * @param showSeconds if the returned string should includes seconds (true) or not (false). To have more control
+	 *                    over the precision, call {@link #relativeDateFr(long, RelativePrecision, DisplayPrecision,
+	 *                    boolean)}.
+	 * @param compactWords true to use compact words, false to use full words.
+	 * @return a human readable {@link String} representation of the provided time.
+	 */
+	public static String relativeDateFr(long time, boolean showSeconds, boolean compactWords) {
+		return relativeDateFr(time,
 				showSeconds ? RelativePrecision.SECONDS : RelativePrecision.MINUTES,
 				showSeconds ? DisplayPrecision.SECONDS : DisplayPrecision.MINUTES,
 				compactWords);
 	}
 
 
-	public static String relativeDateFr(long displayTime, RelativePrecision relPrecision, DisplayPrecision dispPrecision, boolean compactWords) {
+	/**
+	 * Provides a human readable date of the provided time, with ability to adapt the text relatively to the current
+	 * time (for instance "il y a 13 minutes" (french for "13 minutes ago"))
+	 * <p>
+	 * <b>This method renders the text in French.</b>
+	 *
+	 * @param time the timestamp in milliseconds of the time to diplay.
+	 * @param relPrecision the precision of the relative text.
+	 * @param dispPrecision the precision of the full date and time.
+	 * @param compactWords true to use compact words, false to use full words.
+	 * @return a human readable {@link String} representation of the provided time.
+	 */
+	public static String relativeDateFr(long time, RelativePrecision relPrecision, DisplayPrecision dispPrecision, boolean compactWords) {
 		long currentTime = System.currentTimeMillis();
 		
 		
-		LocalDateTime displayDateTime = toLocalDateTime(displayTime);
+		LocalDateTime displayDateTime = toLocalDateTime(time);
 		LocalDateTime currentDateTime = toLocalDateTime(currentTime);
 		
 		
-		long timeDiff = currentTime - displayTime;
+		long timeDiff = currentTime - time;
 		long timeDiffSec = timeDiff / 1000;
 		
 		if (timeDiffSec < -1) {
@@ -57,7 +86,7 @@ public class TimeUtil {
 				if (timeDiffSec > -60)
 					return "dans " + (-timeDiffSec) + (compactWords ? "s" : " secondes"); 
 			}
-			if (relPrecision.morePreciseOrEqTo(RelativePrecision.MINUTES)) {
+			if (relPrecision.ordinal() >= RelativePrecision.MINUTES.ordinal()) {
 				if (timeDiffSec > -60)
 					return compactWords ? "dans moins d’1min" : "dans moins d’une minute";
 				if (timeDiffSec > -60*2) // dans 2 min
@@ -65,7 +94,7 @@ public class TimeUtil {
 				if (timeDiffSec > -3600) // dans moins d’1h
 					return "dans " + (-timeDiffSec/60) + (compactWords ? "min" : " minutes");
 			}
-			if (relPrecision.morePreciseOrEqTo(RelativePrecision.HOURS)) {
+			if (relPrecision.ordinal() >= RelativePrecision.HOURS.ordinal()) {
 				if (timeDiffSec > -3600) // dans moins d’1h
 					return compactWords ? "dans moins d’1h" : "dans moins d’une heure";
 				if (timeDiffSec > -3600*2) // dans moins de 2h
@@ -73,16 +102,16 @@ public class TimeUtil {
 				if (timeDiffSec > -3600*12) // dans moins de 12h
 					return "dans " + (-timeDiffSec/3600) + (compactWords ? "h" : " heures");
 			}
-			if (relPrecision.morePreciseOrEqTo(RelativePrecision.DAYS)) {
+			if (relPrecision.ordinal() >= RelativePrecision.DAYS.ordinal()) {
 				LocalDateTime nextMidnight = LocalDateTime.of(currentDateTime.getYear(), currentDateTime.getMonth(), currentDateTime.getDayOfMonth(), 0, 0).plusDays(1);
 				if (displayDateTime.isBefore(nextMidnight)) // aujourd'hui
-					return "aujourd’hui à " + dayTimeFr(displayTime, dispPrecision);
+					return "aujourd’hui à " + dayTimeFr(time, dispPrecision);
 				if (displayDateTime.isBefore(nextMidnight.plusDays(1))) // demain
-					return "demain à " + dayTimeFr(displayTime, dispPrecision);
+					return "demain à " + dayTimeFr(time, dispPrecision);
 				if (displayDateTime.isBefore(nextMidnight.plusDays(5))) // dans moins d'1 semaine
 					return (compactWords ? cmpDayOfWeekFormatter : dayOfWeekFormatter).format(displayDateTime) + " "
 							+ dayOfMonthFormatter.format(displayDateTime) + " à "
-							+ dayTimeFr(displayTime, dispPrecision);
+							+ dayTimeFr(time, dispPrecision);
 			}
 
 		}
@@ -95,7 +124,7 @@ public class TimeUtil {
 				if (timeDiffSec < 60) // ya moins d'1 min
 					return "il y a " + timeDiffSec + (compactWords ? "s" : " secondes");
 			}
-			if (relPrecision.morePreciseOrEqTo(RelativePrecision.MINUTES)) {
+			if (relPrecision.ordinal() >= RelativePrecision.MINUTES.ordinal()) {
 				if (timeDiffSec < 60) // ya moins d'1 min
 					return compactWords ? "il y a moins d’1min" : "il y a moins d’une minute";
 				if (timeDiffSec < 60*2) // ya moins de 2 min
@@ -103,7 +132,7 @@ public class TimeUtil {
 				if (timeDiffSec < 3600) // ya moins d'1h
 					return "il y a " + (timeDiffSec/60) + (compactWords ? "min" : " minutes");
 			}
-			if (relPrecision.morePreciseOrEqTo(RelativePrecision.HOURS)) {
+			if (relPrecision.ordinal() >= RelativePrecision.HOURS.ordinal()) {
 				if (timeDiffSec < 3600) // ya moins d'1h
 					return "il y a moins d’une heure";
 				if (timeDiffSec < 3600*2) // ya moins de 2h
@@ -111,60 +140,126 @@ public class TimeUtil {
 				if (timeDiffSec < 3600*12) // ya moins de 12h
 					return "il y a " + (timeDiffSec/3600) + " heures";
 			}
-			if (relPrecision.morePreciseOrEqTo(RelativePrecision.DAYS)) {
+			if (relPrecision.ordinal() >= RelativePrecision.DAYS.ordinal()) {
 				LocalDateTime lastMidnight = LocalDateTime.of(currentDateTime.getYear(), currentDateTime.getMonth(), currentDateTime.getDayOfMonth(), 0, 0);
 				if (!displayDateTime.isBefore(lastMidnight)) // aujourd'hui
-					return "aujourd’hui à " + dayTimeFr(displayTime, dispPrecision);
+					return "aujourd’hui à " + dayTimeFr(time, dispPrecision);
 				if (!displayDateTime.isBefore(lastMidnight.minusDays(1))) // hier
-					return "hier à " + dayTimeFr(displayTime, dispPrecision);
+					return "hier à " + dayTimeFr(time, dispPrecision);
 				if (!displayDateTime.isBefore(lastMidnight.minusDays(6))) // ya moins d'1 semaine
 					return (compactWords ? cmpDayOfWeekFormatter : dayOfWeekFormatter).format(displayDateTime) + " dernier à "
-							+ dayTimeFr(displayTime, dispPrecision);
+							+ dayTimeFr(time, dispPrecision);
 			}
 
 		}
-		return fullDateFr(displayTime, dispPrecision, true, compactWords);
+		return fullDateFr(time, dispPrecision, true, compactWords);
 
 	}
 
-	
+	/**
+	 * Enumaration of different level of precision to display a relative time.
+	 */
 	public enum RelativePrecision {
-		NONE, DAYS, HOURS, MINUTES, SECONDS;
+		/**
-
+		 * No relative display.
-		public boolean morePreciseThan(RelativePrecision o) { return ordinal() > o.ordinal(); }
+		 */
-		public boolean lessPreciseThan(RelativePrecision o) { return ordinal() < o.ordinal(); }
+		NONE,
-		public boolean morePreciseOrEqTo(RelativePrecision o) { return ordinal() >= o.ordinal(); }
+		/**
-		public boolean lessPreciseOrEqTo(RelativePrecision o) { return ordinal() <= o.ordinal(); }
+		 * Days precision for relative display.
+		 */
+		DAYS,
+		/**
+		 * Hours precision for relative display.
+		 */
+		HOURS,
+		/**
+		 * Minutes precision for relative display.
+		 */
+		MINUTES,
+		/**
+		 * Seconds precision for relative display.
+		 */
+		SECONDS;
 	}
 
+	/**
+	 * Enumaration of different level of precision to display a date and daytime.
+	 */
 	public enum DisplayPrecision {
-		DAYS, HOURS, MINUTES, SECONDS
+		/**
+		 * Display only the date.
+		 */
+		DAYS,
+		/**
+		 * Display the date and the hour of the day.
+		 */
+		HOURS,
+		/**
+		 * Display the date and the time of the day up to the minute.
+		 */
+		MINUTES,
+		/**
+		 * Display the date and the time of the day up to the second.
+		 */
+		SECONDS
 	}
 
 
-	public static String fullDateFr(long displayTime, boolean showSeconds, boolean showWeekday, boolean compactWords) {
+	/**
-		return fullDateFr(displayTime, showSeconds ? DisplayPrecision.SECONDS : DisplayPrecision.MINUTES, showWeekday, compactWords);
+	 * Returns a string representation of the date (and eventually day time) of the provided timestamp.
+	 * <p>
+	 * <b>This method renders the text in French.</b>
+	 *
+	 * @param timestamp the time to represent in the returned string.
+	 * @param showSeconds if the returned string should includes seconds (true) or not (false). To have more control
+	 *                    over the precision, call {@link #fullDateFr(long, DisplayPrecision, boolean, boolean)}.
+	 * @param showWeekday true to show the week day, false otherwise.
+	 * @param compactWords true to use compact words, false to use full words.
+	 * @return a string representation of the date (and eventually day time) of the provided timestamp.
+	 */
+	public static String fullDateFr(long timestamp, boolean showSeconds, boolean showWeekday, boolean compactWords) {
+		return fullDateFr(timestamp, showSeconds ? DisplayPrecision.SECONDS : DisplayPrecision.MINUTES, showWeekday, compactWords);
 	}
 
-	public static String fullDateFr(long displayTime, DisplayPrecision precision, boolean showWeekday, boolean compactWords) {
+	/**
-		LocalDateTime displayDateTime = toLocalDateTime(displayTime);
+	 * Returns a string representation of the date (and eventually day time) of the provided timestamp.
+	 * <p>
+	 * <b>This method renders the text in French.</b>
+	 *
+	 * @param timestamp the time to represent in the returned string.
+	 * @param precision the {@link DisplayPrecision} fo the returned string.
+	 * @param showWeekday true to show the week day, false otherwise.
+	 * @param compactWords true to use compact words, false to use full words.
+	 * @return a string representation of the date (and eventually day time) of the provided timestamp.
+	 */
+	public static String fullDateFr(long timestamp, DisplayPrecision precision, boolean showWeekday, boolean compactWords) {
+		LocalDateTime displayDateTime = toLocalDateTime(timestamp);
 		String ret = (showWeekday ? ((compactWords ? cmpDayOfWeekFormatter : dayOfWeekFormatter).format(displayDateTime) + " ") : "")
 				+ dayOfMonthFormatter.format(displayDateTime) + " "
 				+ (compactWords ? cmpMonthFormatter : monthFormatter).format(displayDateTime) + " "
 				+ yearFormatter.format(displayDateTime);
 		if (precision == DisplayPrecision.DAYS)
 			return ret;
-		return ret + " à " + dayTimeFr(displayTime, precision);
+		return ret + " à " + dayTimeFr(timestamp, precision);
 	}
 
-	public static String dayTimeFr(long displayTime, DisplayPrecision precision) {
+	/**
+	 * Returns a string representation of the time of the day of the provided timestamp.
+	 * <p>
+	 * <b>This method renders the text in French.</b>
+	 *
+	 * @param timestamp the time to represent in the returned string.
+	 * @param precision the {@link DisplayPrecision} fo the returned string.
+	 * @return a string representation of the time of the day of the provided timestamp.
+	 */
+	public static String dayTimeFr(long timestamp, DisplayPrecision precision) {
 		DateTimeFormatter tFormatter = switch(precision) {
 		case HOURS -> HFormatter;
 		case MINUTES -> HMFormatter;
 		case SECONDS -> HMSFormatter;
 		default -> throw new IllegalArgumentException("precision");
 		};
-		return tFormatter.format(toLocalDateTime(displayTime));
+		return tFormatter.format(toLocalDateTime(timestamp));
 	}
 	
 	
@@ -173,14 +268,16 @@ public class TimeUtil {
 	}
 
 
-	
+	/**
-	
+	 * Converts the provided duration into a human readable {@link String}.
-	
+	 * @param msDuration the duration in millisecond.
-	
+	 * @param hUnit the biggest unit of time to display.
-	
+	 * @param lUnit the smallest unit of time to display.
-	
+	 * @param spaces true to put spaces between time units (e.g.: {@code "1s 500ms"}) or false otherwise (e.g.: {@code "1s500ms"})).
-	
+	 * @param fr true to use French unit symbols (it only changes the day symbol from "d" to "j").
-	
+	 * @param leadingZeros to use leading zeros when necessary in front of some durations.
+	 * @return a {@link String} representation of the duration.
+	 */
 	public static String durationToLongString(long msDuration, TimeUnit hUnit, TimeUnit lUnit, boolean spaces, boolean fr, boolean leadingZeros) {
 		if (lUnit.compareTo(hUnit) > 0) {
 			TimeUnit tmp = lUnit;
@@ -210,14 +307,19 @@ public class TimeUtil {
 				.map(u -> {
 					long v = u.convert(remainingTime.get(), TimeUnit.MILLISECONDS);
 					remainingTime.addAndGet(TimeUnit.MILLISECONDS.convert(-v, u));
-					return toString(v, leadingZeros ? timeUnitToLeftPadLength(u) : 1) + timeUnitToSuffix(u, fr);
+					return toStringWithPaddingZeros(v, leadingZeros ? timeUnitToLeftPadLength(u) : 1) + timeUnitToSuffix(u, fr);
 				})
 				.collect(Collectors.joining(spaces ? " " : ""));
 		// ensure there is at least something to display (for instance : "0s")
-		return oneDisplayed.get() ? ret : (toString(0, leadingZeros ? timeUnitToLeftPadLength(lUnit) : 1) + timeUnitToSuffix(lUnit, fr));
+		return oneDisplayed.get() ? ret : (toStringWithPaddingZeros(0, leadingZeros ? timeUnitToLeftPadLength(lUnit) : 1) + timeUnitToSuffix(lUnit, fr));
 	}
 
-	
+	/**
+	 * Provides a unit symbol for the provided {@link TimeUnit}.
+	 * @param u the {@link TimeUnit}.
+	 * @param fr true to use French unit symbols (it only changes the {@link TimeUnit#DAYS} symbol from "d" to "j").
+	 * @return a unit symbol for the provided {@link TimeUnit}.
+	 */
 	public static String timeUnitToSuffix(TimeUnit u, boolean fr) {
 		return switch (u) {
 			case DAYS -> fr ? "j" : "d";
@@ -230,6 +332,12 @@ public class TimeUtil {
 		};
 	}
 
+	/**
+	 * Indicate the 0-padded length of a number for the provided {@link TimeUnit}.
+	 * Will returns 3 for below-second time units, 2 for seconds, munutes and hours and 1 otherwise.
+	 * @param u the {@link TimeUnit}
+	 * @return the 0-padded length of a number for the provided {@link TimeUnit}.
+	 */
 	public static int timeUnitToLeftPadLength(TimeUnit u) {
 		return switch (u) {
 			case NANOSECONDS, MICROSECONDS, MILLISECONDS -> 3;
@@ -238,7 +346,14 @@ public class TimeUtil {
 		};
 	}
 
-	public static String toString(long value, int leftPad) {
+	/**
+	 * Converts the provided long to a {@link String} and eventually prepend any {@code "0"} necessary to make the
+	 * returned string’s length at least {@code leftPad}.
+	 * @param value the value to convert to {@link String}.
+	 * @param leftPad the minimal length of the returned String.
+	 * @return the string representation of the provided value, with eventual zeros prepended.
+	 */
+	public static String toStringWithPaddingZeros(long value, int leftPad) {
 		String valueStr = Long.toString(value);
 		int padding = leftPad - valueStr.length();
 		if (padding <= 0)
@@ -255,6 +370,7 @@ public class TimeUtil {
 	 * Equivalent to {@link #durationToLongString(long, TimeUnit, TimeUnit, boolean, boolean, boolean) TimeUnit.durationToLongString(msDuration, TimeUnit.DAYS, milliseconds ? TimeUnit.MILLISECONDS : TimeUnit.SECONDS, true, true, false)}
 	 * @param msDuration the duration in ms
 	 * @param milliseconds if the milliseconds are displayed or not
+	 * @return a {@link String} representation of the duration.
 	 */
 	public static String durationToString(long msDuration, boolean milliseconds) {
 		return durationToLongString(msDuration, TimeUnit.DAYS, milliseconds ? TimeUnit.MILLISECONDS : TimeUnit.SECONDS, true, true, false);
@@ -263,6 +379,7 @@ public class TimeUtil {
 	/**
 	 * Equivalent to {@link #durationToLongString(long, TimeUnit, TimeUnit, boolean, boolean, boolean) TimeUnit.durationToLongString(msDuration, TimeUnit.DAYS, TimeUnit.SECONDS, true, true, false)}
 	 * @param msDuration the duration in ms
+	 * @return a {@link String} representation of the duration.
 	 */
 	public static String durationToString(long msDuration) {
 		return durationToLongString(msDuration, TimeUnit.DAYS, TimeUnit.SECONDS, true, true, false);
@@ -271,6 +388,7 @@ public class TimeUtil {
 	/**
 	 * Equivalent to {@link #durationToLongString(long, TimeUnit, TimeUnit, boolean, boolean, boolean) TimeUnit.durationToLongString(msDuration, TimeUnit.DAYS, TimeUnit.SECONDS, false, false, false)}
 	 * @param msDuration the duration in ms
+	 * @return a {@link String} representation of the duration.
 	 */
 	public static String durationToParsableString(long msDuration) {
 		return durationToLongString(msDuration, TimeUnit.DAYS, TimeUnit.SECONDS, false, false, false);
@@ -279,9 +397,14 @@ public class TimeUtil {
 
 	
 	/**
-	 * @see <a href="https://github.com/EssentialsX/Essentials/blob/2.x/Essentials/src/main/java/com/earth2me/essentials/utils/DateUtil.java">Essentials DateUtil#parseDuration(String, boolean)</a>
+	 * Parse a duration string into a time in the past of future, relative to now.
+	 * Source: <a href="https://github.com/EssentialsX/Essentials/blob/2.x/Essentials/src/main/java/com/earth2me/essentials/utils/DateUtil.java">Essentials DateUtil#parseDuration(String, boolean)</a>
+	 * @param time the duration to parse.
+	 * @param future thur to return the time in the future, false for the time in the past.
+	 * @return the computed timestamp in millisecond.
+	 * @throws IllegalArgumentException if the format is not valid.
 	 */
-	public static long parseDuration(String time, boolean future) throws Exception {
+	public static long parseDuration(String time, boolean future) {
 		@SuppressWarnings("RegExpSimplifiable")
 		Pattern timePattern = Pattern.compile("(?:([0-9]+)\\s*y[a-z]*[,\\s]*)?" + "(?:([0-9]+)\\s*mo[a-z]*[,\\s]*)?"
 				+ "(?:([0-9]+)\\s*w[a-z]*[,\\s]*)?" + "(?:([0-9]+)\\s*d[a-z]*[,\\s]*)?"
@@ -297,12 +420,14 @@ public class TimeUtil {
 		int seconds = 0;
 		boolean found = false;
 		while (m.find()) {
-			if (m.group() == null || m.group().isEmpty()) continue;
+			if (m.group() == null || m.group().isEmpty())
-			for (int i = 0; i < m.groupCount(); i++)
+				continue;
+			for (int i = 0; i < m.groupCount(); i++) {
 				if (m.group(i) != null && !m.group(i).isEmpty()) {
 					found = true;
 					break;
 				}
+			}
 			if (found) {
 				if (m.group(1) != null && !m.group(1).isEmpty()) years = Integer.parseInt(m.group(1));
 				if (m.group(2) != null && !m.group(2).isEmpty()) months = Integer.parseInt(m.group(2));
@@ -314,7 +439,8 @@ public class TimeUtil {
 				break;
 			}
 		}
-		if (!found) throw new Exception("Format de durée invalide");
+		if (!found)
+			throw new IllegalArgumentException("Invalid duration format");
 		Calendar c = new GregorianCalendar();
 		if (years > 0) c.add(Calendar.YEAR, years * (future ? 1 : -1));
 		if (months > 0) c.add(Calendar.MONTH, months * (future ? 1 : -1));
@@ -325,15 +451,8 @@ public class TimeUtil {
 		if (seconds > 0) c.add(Calendar.SECOND, seconds * (future ? 1 : -1));
 		Calendar max = new GregorianCalendar();
 		max.add(Calendar.YEAR, 10);
-		if (c.after(max)) return max.getTimeInMillis();
+		return c.after(max) ? max.getTimeInMillis() : c.getTimeInMillis();
-		return c.getTimeInMillis();
 	}
 
 
-
-
-	public static final List<String> DURATION_SUFFIXES = List.of("y", "mo", "w", "d", "h", "m", "s");
-
-	
-
 }