diff --git a/checkstyle.xml b/checkstyle.xml
new file mode 100644
index 00000000..4f664bd0
--- /dev/null
+++ b/checkstyle.xml
@@ -0,0 +1,48 @@
+<?xml version="1.0"?>
+<!DOCTYPE module PUBLIC
+          "-//Checkstyle//DTD Checkstyle Configuration 1.3//EN"
+          "https://checkstyle.org/dtds/configuration_1_3.dtd">
+
+<module name="Checker">
+    <!-- See http://checkstyle.sourceforge.net/config_misc.html#NewlineAtEndOfFile -->
+    <module name="NewlineAtEndOfFile">
+        <property name="lineSeparator" value="lf_cr_crlf"/>
+    </module>
+
+    <!-- See http://checkstyle.sourceforge.net/config_whitespace.html -->
+    <module name="FileTabCharacter"/>
+
+    <!-- See http://checkstyle.sourceforge.net/config_misc.html -->
+    <module name="RegexpSingleline">
+       <property name="format" value="\s+$"/>
+       <property name="minimum" value="0"/>
+       <property name="maximum" value="0"/>
+       <property name="message" value="Line has trailing spaces."/>
+    </module>
+
+    <module name="TreeWalker">
+        <!-- See http://checkstyle.sourceforge.net/config_filters.html -->
+        <module name="SuppressionCommentFilter"/>
+
+        <!-- See http://checkstyle.sourceforge.net/config_imports.html -->
+        <module name="AvoidStarImport"/>
+        <module name="ImportOrder">
+            <property name="option" value="above"/>
+            <property name="ordered" value="true"/>
+            <property name="separatedStaticGroups" value="true"/>
+            <property name="sortStaticImportsAlphabetically" value="true"/>
+        </module>
+        <module name="RedundantImport"/>
+        <module name="UnusedImports"/>
+
+        <!-- See http://checkstyle.sourceforge.net/config_modifiers.html -->
+        <module name="ModifierOrder"/>
+
+        <!-- See http://checkstyle.sourceforge.net/config_design.html -->
+        <module name="FinalClass"/>
+
+        <!-- See http://checkstyle.sourceforge.net/config_misc.html -->
+        <module name="ArrayTypeStyle"/>
+        <module name="UpperEll"/>
+    </module>
+</module>
diff --git a/pom.xml b/pom.xml
index 3d0f45ef..9fe06ace 100644
--- a/pom.xml
+++ b/pom.xml
@@ -124,7 +124,7 @@
                 <version>3.0.0</version>
                 <executions>
                     <execution>
-                        <phase>validate</phase>
+                        <phase>process-classes</phase>
                         <goals>
                             <goal>check</goal>
                         </goals>