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">
    <module name="Header">
        <property name="headerFile" value="header.txt"/>
        <property name="fileExtensions" value="java"/>
    </module>

    <module name="BeforeExecutionExclusionFileFilter">
        <property name="fileNamePattern" value="module\-info\.java$"/>
    </module>

    <module name="NewlineAtEndOfFile">
        <property name="lineSeparator" value="lf"/>
        <property name="fileExtensions" value="java, xml"/>
    </module>
    <module name="RegexpSingleline">
        <property name="format" value="\s+$"/>
        <property name="message" value="Line has trailing spaces."/>
    </module>

    <module name="RegexpMultiline">
        <property name="format" value="\r\n"/>
        <property name="message" value="Do not use Windows line endings"/>
    </module>

    <module name="TreeWalker">
        <module name="UnnecessarySemicolonAfterTypeMemberDeclaration"/>
        <module name="OneStatementPerLineCheck" />
        <!--        <module name="SummaryJavadoc" />-->
        <module name="UnnecessarySemicolonInTryWithResources" />

        <module name="Indentation">
            <property name="basicOffset" value="8"/>
            <property name="lineWrappingIndentation" value="0"/>
            <property name="arrayInitIndent" value="8"/>
            <property name="caseIndent" value="8"/>
        </module>
        <module name="EqualsAvoidNull"/>
        <module name="FinalClass"/>
        <module name="FinalLocalVariable"/>
        <module name="FinalParameters"/>
        <!--<module name="IllegalCatch"/>-->
        <module name="IllegalThrows"/>
        <module name="IllegalToken" />
        <module name="IllegalTokenText" />
        <module name="IllegalType" />
        <module name="InnerAssignment"/>
        <module name="MissingOverride"/>
        <module name="ModifiedControlVariable"/>
        <module name="NoWhitespaceBefore"/>
        <module name="ParenPad"/>
        <module name="WhitespaceAfter">
            <property name="tokens" value="COMMA, SEMI, TYPECAST, LITERAL_ELSE, LITERAL_DO"/>
        </module>
        <module name="ModifierOrder"/>
        <module name="RedundantModifier">
            <property name="tokens" value="VARIABLE_DEF, ANNOTATION_FIELD_DEF, INTERFACE_DEF, CTOR_DEF, CLASS_DEF, ENUM_DEF"/>
        </module>
        <module name="WhitespaceAround" >
            <property name="tokens" value="ASSIGN, ARRAY_INIT, BAND, BAND_ASSIGN, BOR, BOR_ASSIGN, BSR, BSR_ASSIGN, BXOR, BXOR_ASSIGN, COLON, DIV,
            DIV_ASSIGN, EQUAL, GE, GT, LAMBDA, LAND, LCURLY, LE, LOR, LT, MINUS, MINUS_ASSIGN, MOD, MOD_ASSIGN, NOT_EQUAL, PLUS, PLUS_ASSIGN, QUESTION,
            SL, SLIST, SL_ASSIGN, SR, SR_ASSIGN, STAR, STAR_ASSIGN, LITERAL_ASSERT, TYPE_EXTENSION_AND"/>
        </module>
        <module name="LeftCurly"/>
        <module name="RightCurly"/>
        <module name="NeedBraces"/>
        <module name="InterfaceIsType"/>
        <module name="HideUtilityClassConstructor"/>
        <module name="NestedForDepth">
            <!-- put to 1 -->
            <property name="max" value="2"/>
        </module>
        <module name="NestedIfDepth">
            <property name="max" value="2"/>
        </module>
        <module name="NestedTryDepth">
            <property name="max" value="1"/>
        </module>
        <!--<module name="NoClone"/>-->
        <module name="NoFinalizer"/>
        <module name="ParameterAssignment"/>
        <module name="CyclomaticComplexity">
            <property name="max" value="12"/>
            <property name="switchBlockAsSingleDecisionPoint" value="true"/>
        </module>

        <module name="AnnotationLocation">
            <property name="allowSamelineMultipleAnnotations" value="true"/>
            <property name="allowSamelineSingleParameterlessAnnotation" value="false"/>
            <property name="allowSamelineParameterizedAnnotation" value="false"/>
        </module>

        <module name="RegexpSinglelineJava">
            <property name="format" value="^\t* "/>
            <property name="message" value="Indent must use tab characters"/>
            <property name="ignoreComments" value="true"/>
        </module>

        <module name="AvoidStarImport"/>
        <module name="IllegalImport"/>
        <module name="RedundantImport"/>
        <module name="UnusedImports">
            <property name="processJavadoc" value="true"/>
        </module>

        <module name="GenericWhitespace"/>
        <module name="EmptyForIteratorPad"/>
        <module name="MethodParamPad"/>
        <module name="NoWhitespaceAfter">
            <property name="tokens" value="BNOT, DEC, INC, LNOT, UNARY_MINUS, UNARY_PLUS"/>
        </module>
    </module>
</module>