checkstyle.xml

<?xml version="1.0"?>
<!DOCTYPE module PUBLIC
    "-//Puppy Crawl//DTD Check Configuration 1.2//EN"
    "http://www.puppycrawl.com/dtds/configuration_1_2.dtd">

<module name="Checker">
    <!--
        Comment out or remove this if you don't care about
        "File does not end with a newline" errors:
    -->
    <!-- <module name="NewlineAtEndOfFile"/> -->

    <module name="Translation"/>
    <module name="FileLength"/>

    <!--
        RegexpSingleline checks remain commented. If you want
        them back, remove the comments and fix the code.
    -->
    <!--
    <module name="RegexpSingleline">
        <property name="format" value="^\s* +\s*[^*]" />
        <property name="message" value="Indentation must use tab characters" />
    </module>

    <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">

        <!-- LeftCurly: let braces be on same line or next line -->
        <module name="LeftCurly">
            <property name="option" value="eol"/>
        </module>

        <!-- Keep checks you still want. -->
        <module name="IllegalImport"/>
        <!-- <module name="RedundantImport"/> -->
        <module name="UnusedImports"/>

        <!-- Relax MethodLength to allow up to 750 lines. -->
        <module name="MethodLength">
            <property name="max" value="750"/>
        </module>

        <!-- Relax ParameterNumber to allow up to 10 parameters. -->
        <module name="ParameterNumber">
            <property name="tokens" value="METHOD_DEF"/>
            <property name="max" value="10"/>
        </module>

        <!--
          NeedBraces is generating warnings for if/for constructs
          that don’t use braces. If you do not want to fix code,
          comment out or remove the entire check:
        -->
        <!-- <module name="NeedBraces"/> -->

        <module name="GenericWhitespace"/>
        <module name="EqualsHashCode"/>
        <module name="IllegalInstantiation"/>
        <module name="FinalClass"/>

        <!--
          HideUtilityClassConstructor is complaining about
          “Utility classes should not have a public or default constructor.”
          If you don’t want to fix it, remove this check:
        -->
        <!-- <module name="HideUtilityClassConstructor"/> -->

        <!--
          InterfaceIsType complains about interfaces with no methods.
          Remove if you don’t want to fix code:
        -->
        <!-- <module name="InterfaceIsType"/> -->

        <!--
          If you don’t want to see warnings for “TODO” / “FIXME” / “XXX”,
          remove or comment out the checks entirely:
        -->
        <!--
        <module name="TodoComment">
            <property name="format" value="FIXME"/>
        </module>
        <module name="TodoComment">
            <property name="format" value="TODO"/>
            <property name="severity" value="warning"/>
        </module>
        <module name="TodoComment">
            <property name="format" value="XXX"/>
            <property name="severity" value="warning"/>
        </module>
        -->

        <module name="UpperEll"/>

    </module>
</module>