checkstyle.xml

<?xml version="1.0"?>
<!DOCTYPE module PUBLIC
        "-//Puppy Crawl//DTD Check Configuration 1.3//EN"
        "http://www.puppycrawl.com/dtds/configuration_1_3.dtd">
<module name="Checker">
    <property name="fileExtensions" value="java"/>
    <module name="FileTabCharacter">
        <property name="eachLine" value="true"/>
    </module>
    <module name="NewlineAtEndOfFile">
        <property name="lineSeparator" value="lf"/>
    </module>
    <module name="RegexpMultiline">
        <property name="format" value="^((?!(class|enum|interface|extends|implements)\s).)*\{\s*\n\s*\n"/>
        <property name="message" value="Empty line at the beginning of code block."/>
    </module>
    <module name="RegexpMultiline">
        <property name="format" value="(\}|;)\n\s*\n\s*\}"/>
        <property name="message" value="Empty line before block ending."/>
    </module>
    <module name="RegexpMultiline">
        <property name="format" value=";\n[^\S\n]*(return|if|while)(;|\s)"/>
        <property name="message" value="No empty line before if/while/return statement."/>
    </module>
    <module name="RegexpMultiline">
        <property name="format" value="^[^\S\n]*\}\n[^\S\n]*(?![^\S\n]*\})(?!$)"/>
        <property name="message" value="No empty line after clode block."/>
    </module>
    <module name="RegexpMultiline">
        <property name="format" value="\n[^\S\n]*\n[^\S\n]*$"/>
        <property name="message" value="More than 1 newline."/>
    </module>
    <module name="SuppressionFilter">
        <property name="file" value="suppression.xml"/>
    </module>
    <module name="TreeWalker">
        <module name="AnnotationLocation">
            <property name="allowSamelineSingleParameterlessAnnotation" value="false"/>
        </module>
        <module name="AnnotationUseStyle"/>
        <module name="ArrayTrailingComma"/>
        <module name="ArrayTypeStyle"/>
        <module name="AvoidEscapedUnicodeCharacters"/>
        <module name="AvoidInlineConditionals"/>
        <module name="AvoidNestedBlocks"/>
        <module name="CatchParameterName"/>
        <module name="ClassTypeParameterName"/>
        <module name="CommentsIndentation"/>
        <module name="ConstantName"/>
        <module name="CustomImportOrder">
            <property name="customImportOrderRules"
                      value="THIRD_PARTY_PACKAGE###SPECIAL_IMPORTS###STANDARD_JAVA_PACKAGE###STATIC"/>
            <property name="specialImportsRegExp" value="^javax\."/>
            <property name="standardPackageRegExp" value="^java\."/>
            <property name="sortImportsInGroupAlphabetically" value="true"/>
            <property name="separateLineBetweenGroups" value="false"/>
        </module>
        <!--<module name="CyclomaticComplexity"/>-->
        <module name="DeclarationOrder"/>
        <module name="DefaultComesLast"/>
        <module name="EmptyBlock"/>
        <module name="EmptyCatchBlock"/>
        <module name="EmptyForInitializerPad"/>
        <module name="EmptyForIteratorPad"/>
        <module name="EmptyLineSeparator">
            <property name="allowNoEmptyLineBetweenFields" value="true"/>
            <property name="allowMultipleEmptyLines" value="false"/>
            <property name="allowMultipleEmptyLinesInsideClassMembers" value="false"/>
        </module>
        <module name="EmptyStatement"/>
        <module name="EqualsAvoidNull"/>
        <module name="EqualsHashCode"/>
        <module name="ExplicitInitialization"/>
        <module name="FallThrough"/>
        <module name="FinalClass"/>
        <module name="GenericWhitespace"/>
        <module name="HiddenField">
            <property name="ignoreConstructorParameter" value="true"/>
            <property name="ignoreSetter" value="true"/>
        </module>
        <module name="IllegalThrows"/>
        <module name="IllegalToken"/>
        <module name="IllegalType"/>
        <module name="Indentation"/>
        <module name="InnerAssignment"/>
        <module name="InnerTypeLast"/>
        <module name="InterfaceIsType"/>
        <module name="InterfaceTypeParameterName"/>
        <module name="JavaNCSS"/>
        <module name="LeftCurly">
            <property name="ignoreEnums" value="false"/>
        </module>
        <module name="LineLength">
            <property name="max" value="120"/>
        </module>
        <module name="LocalFinalVariableName"/>
        <module name="LocalVariableName">
            <property name="allowOneCharVarInForLoop" value="true"/>
        </module>
        <module name="MemberName"/>
        <module name="MethodName"/>
        <module name="MethodParamPad"/>
        <module name="MethodTypeParameterName"/>
        <module name="MissingSwitchDefault"/>
        <module name="ModifiedControlVariable"/>
        <module name="ModifierOrder"/>
        <module name="MultipleVariableDeclarations"/>
        <module name="MutableException"/>
        <module name="NeedBraces"/>
        <module name="NoClone"/>
        <module name="NoFinalizer"/>
        <module name="NoLineWrap"/>
        <module name="NoWhitespaceAfter">
            <property name="allowLineBreaks" value="false"/>
        </module>
        <module name="NoWhitespaceBefore">
            <property name="allowLineBreaks" value="true"/>
            <property name="tokens" value="COMMA, SEMI, POST_INC, POST_DEC, DOT, ELLIPSIS, METHOD_REF"/>
        </module>
        <module name="OneStatementPerLine"/>
        <module name="OneTopLevelClass"/>
        <module name="OperatorWrap"/>
        <module name="OuterTypeFilename"/>
        <module name="OuterTypeNumber"/>
        <module name="OverloadMethodsDeclarationOrder"/>
        <module name="PackageDeclaration"/>
        <module name="PackageName">
            <property name="format" value="^[a-z]+(\.[a-zA-Z][a-zA-Z0-9]*)*$"/>
        </module>
        <module name="ParameterAssignment"/>
        <module name="ParameterName"/>
        <module name="ParenPad"/>
        <module name="RedundantImport"/>
        <module name="RedundantModifier"/>
        <module name="RequireThis"/>
        <module name="RightCurly"/>
        <module name="SeparatorWrap">
            <property name="id" value="SeparatorWrapDot"/>
            <property name="tokens" value="DOT"/>
            <property name="option" value="nl"/>
        </module>
        <module name="SeparatorWrap">
            <property name="id" value="SeparatorWrapComma"/>
            <property name="tokens" value="COMMA"/>
            <property name="option" value="EOL"/>
        </module>
        <module name="SeparatorWrap">
            <property name="id" value="SeparatorWrapEllipsis"/>
            <property name="tokens" value="ELLIPSIS"/>
            <property name="option" value="EOL"/>
        </module>
        <module name="SeparatorWrap">
            <property name="id" value="SeparatorWrapArrayDeclarator"/>
            <property name="tokens" value="ARRAY_DECLARATOR"/>
            <property name="option" value="EOL"/>
        </module>
        <module name="SeparatorWrap">
            <property name="id" value="SeparatorWrapMethodRef"/>
            <property name="tokens" value="METHOD_REF"/>
            <property name="option" value="nl"/>
        </module>
        <module name="SimplifyBooleanExpression"/>
        <module name="SimplifyBooleanReturn"/>
        <module name="SingleSpaceSeparator"/>
        <module name="StaticVariableName"/>
        <module name="StringLiteralEquality"/>
        <module name="TodoComment"/>
        <module name="TypecastParenPad"/>
        <module name="TypeName"/>
        <module name="UnnecessaryParentheses"/>
        <module name="UnusedImports"/>
        <module name="UpperEll"/>
        <module name="WhitespaceAfter"/>
        <module name="WhitespaceAround"/>
    </module>
</module>