checkstyle.xml

<?xml version="1.0"?>
<!DOCTYPE module PUBLIC
          "-//Puppy Crawl//DTD Check Configuration 1.3//EN"
          "http://checkstyle.sourceforge.net/dtds/configuration_1_3.dtd">

<!--
    Checkstyle is highly configurable. Be sure to read the documentation at http://checkstyle.sf.net 
 -->

<module name = "Checker">
    <property name="charset" value="UTF-8"/>
    <property name="severity" value="warning"/>
    <property name="fileExtensions" value="java, properties, xml"/>
    <module name="TreeWalker">
        <module name="OuterTypeFilename"/>
        <module name="OneTopLevelClass"/>
        <module name="EmptyBlock">
            <property name="option" value="TEXT"/>
            <property name="tokens" value="LITERAL_TRY, LITERAL_FINALLY, LITERAL_IF, LITERAL_ELSE, LITERAL_SWITCH"/>
        </module>
        <module name="OneStatementPerLine"/>
        <module name="NoFinalizer"/>
        <module name="EmptyCatchBlock">
            <property name="exceptionVariableName" value="expected|ignore"/>
        </module>
        <module name="UpperEll"/>
      
        <!-- Rules from Sun's Java Style  -->
        <module name="IllegalImport"/>
        <module name="EmptyStatement"/>
        <module name="EqualsHashCode"/>
        <module name="SimplifyBooleanReturn"/>
        <module name="TodoComment">
            <property name="format" value="(TODO)|(FIXME)"/>
            <message key="todo.match" value="Resolve unexpected comment."/>
        </module>
       
        <!-- Custom  -->
        <module name="DefaultComesLast">
            <property name="skipIfLastAndSharedWithCase" value="true"/>
        </module>
    </module>
</module>