checkstyle.xml

<?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">
    <!--
        If you set the basedir property below, then all reported file
        names will be relative to the specified directory. See
        https://checkstyle.org/config.html#Checker
        <property name="basedir" value="${basedir}"/>
    -->
    <property name="charset" value="UTF-8"/>
    <property name="fileExtensions" value="java"/>

    <module name="TreeWalker">
        <module name="AvoidNestedBlocks"/>
        <module name="AvoidNoArgumentSuperConstructorCall"/>
        <module name="DefaultComesLast"/>
        <module name="EmptyBlock"/>
        <module name="EmptyCatchBlock">
            <property name="exceptionVariableName" value="ignore"/>
        </module>
        <module name="EqualsAvoidNull"/>
        <module name="LeftCurly"/>
        <module name="RightCurly"/>
        <module name="NeedBraces"/>
        <module name="InnerTypeLast"/>
        <module name="DeclarationOrder">
            <property name="ignoreModifiers" value="true"/>
        </module>
        <module name="ExplicitInitialization"/>
        <module name="UnusedImports"/>
        <module name="RedundantImport"/>
        <module name="RedundantModifier"/>
        <module name="ModifierOrder"/>
        <module name="ArrayTypeStyle"/>
        <module name="StringLiteralEquality"/>
        <!--        <module name="MultipleStringLiterals"/>-->
        <module name="MultipleVariableDeclarations"/>
        <module name="UnnecessaryParentheses"/>
        <module name="UpperEll"/>

        <!--        <module name="MethodParamPad"/>-->
        <!--        <module name="ParenPad"/>-->
        <!--        <module name="TypecastParenPad"/>-->
        <!--        <module name="TabCharacter"/>-->

    </module>

</module>