checkstyle.xml

<!DOCTYPE module PUBLIC
  "-//Puppy Crawl//DTD Check Configuration 1.3//EN"
  "http://www.puppycrawl.com/dtds/configuration_1_3.dtd">
  
<module name="Checker">
    <module name="TreeWalker">
        <module name="DeclarationOrder"/>
        <module name="OneTopLevelClass"/>
        <module name="ParameterNumber"/>
        <module name="TypeName"/>
        <module name="UnusedImports"/>
        <module name="EmptyBlock"/>
        <module name="EmptyStatement"/>
        <module name="ArrayTypeStyle"/>
        <module name="AvoidStarImport"/>
        <module name="CommentsIndentation"/>
        <module name="ConstantName"/>
        <module name="LineLength">
            <property name="max" value="120"/>
        </module>
        <module name="MemberName"/>
        <module name="MethodName">
            <property name="format" value="^[a-zA-Z](_?[a-zA-Z0-9]+)*$"/>
            <property name="allowClassName" value="false"/>
        </module>
        <module name="OneStatementPerLine"/>
        <module name="ParameterName"/>
        <module name="StaticVariableName"/>
    </module>
</module>