checkstyle-config.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE module PUBLIC "-//Checkstyle//DTD Checkstyle Configuration 1.3//EN" "https://checkstyle.org/dtds/configuration_1_3.dtd">
<module name="Checker">
  <property name="severity" value="warning"/>

  <module name="LineLength">
    <property name="severity" value="warning"/>
    <property name="max" value="3100"/>
  </module>

  <module name="TreeWalker">
    <!-- Annotations -->
    <module name="AnnotationLocation"/>
    <!-- <module name="AnnotationOnSameLine"/> -->
    <module name="AnnotationUseStyle">
      <property name="elementStyle" value="compact"/>
    </module>
    <module name="MissingDeprecated"/>
    <module name="MissingOverride"/>
    <module name="PackageAnnotation"/>
    <module name="SuppressWarnings"/>
    <module name="SuppressWarningsHolder"/>

    <!-- Block Checks -->
    <module name="AvoidNestedBlocks">
      <property name="severity" value="warning"/>
    </module>
    <module name="EmptyBlock">
      <property name="severity" value="warning"/>
      <property name="option" value="text"/>
    </module>
    <module name="EmptyCatchBlock"/>
    <module name="LeftCurly">
      <property name="severity" value="warning"/>
      <property name="option" value="nl"/>
      <property name="tokens" value="CLASS_DEF, CTOR_DEF, INTERFACE_DEF, LITERAL_CATCH, LITERAL_DO, LITERAL_ELSE, LITERAL_FINALLY, LITERAL_FOR, LITERAL_IF, LITERAL_SWITCH, LITERAL_SYNCHRONIZED, LITERAL_TRY, LITERAL_WHILE, METHOD_DEF"/>
    </module>
    <module name="NeedBraces">
      <property name="severity" value="warning"/>
    </module>
    <module name="RightCurly">
      <property name="severity" value="warning"/>
      <property name="option" value="alone"/>
      <property name="tokens" value="LITERAL_TRY, LITERAL_CATCH, LITERAL_FINALLY, LITERAL_IF, LITERAL_ELSE, CLASS_DEF, METHOD_DEF, CTOR_DEF, LITERAL_FOR, LITERAL_WHILE, LITERAL_DO"/>
    </module>

    <!-- Class Design -->
    <module name="DesignForExtension"/>
    <module name="FinalClass">
      <property name="severity" value="warning"/>
    </module>
    <module name="HideUtilityClassConstructor">
      <property name="severity" value="warning"/>
    </module>
    <module name="InnerTypeLast"/>
    <module name="InterfaceIsType">
      <property name="severity" value="warning"/>
    </module>
    <module name="MutableException"/>
    <module name="OneTopLevelClass"/>
    <module name="ThrowsCount">
      <property name="max" value="8"/>
    </module>
    <module name="VisibilityModifier">
      <property name="severity" value="warning"/>
    </module>

    <!-- Coding -->
    <!-- <module name="ArrayTrailingComma"/> -->
    <!-- <module name="AvoidInlineConditionals"/> -->
    <module name="CovariantEquals"/>
    <module name="DeclarationOrder"/>
    <module name="DefaultComesLast"/>
    <module name="EmptyStatement">
      <property name="severity" value="warning"/>
    </module>
    <module name="EqualsAvoidNull"/>
    <module name="EqualsHashCode">
      <property name="severity" value="warning"/>
    </module>
    <module name="ExplicitInitialization"/>
    <module name="FallThrough"/>
    <module name="FinalLocalVariable"/>
    <module name="HiddenField">
      <property name="severity" value="warning"/>
      <property name="ignoreConstructorParameter" value="true"/>
      <property name="ignoreSetter" value="true"/>
      <property name="setterCanReturnItsClass" value="true"/>
    </module>
    <!-- TODO Enable later
    <module name="IllegalCatch"/>
    -->
    <module name="IllegalInstantiation">
      <property name="classes" value="java.lang.Boolean"/>
    </module>
    <module name="IllegalThrows"/>
    <module name="IllegalToken"/>
    <module name="IllegalTokenText"/>
    <module name="IllegalType"/>
    <module name="InnerAssignment">
      <property name="severity" value="warning"/>
    </module>
    <!-- TODO Enable later
    <module name="MagicNumber">
      <property name="severity" value="warning"/>
    </module>
    -->
    <!-- <module name="MissingCtor"/> -->
    <module name="MissingSwitchDefault">
      <property name="severity" value="warning"/>
    </module>
    <module name="ModifiedControlVariable"/>
    <!-- TODO Enable later
    <module name="MultipleStringLiterals"/>
    -->
    <module name="MultipleVariableDeclarations"/>
    <module name="NestedForDepth">
      <property name="max" value="3"/>
    </module>
    <module name="NestedIfDepth">
      <property name="max" value="4"/>
    </module>
    <module name="NestedTryDepth">
      <property name="max" value="2"/>
    </module>
    <module name="NoClone"/>
    <module name="NoFinalizer"/>
    <module name="OneStatementPerLine"/>
    <module name="OverloadMethodsDeclarationOrder"/>
    <module name="PackageDeclaration"/>
    <module name="ParameterAssignment"/>
    <!-- <module name="RequireThis"/> -->
    <module name="ReturnCount">
      <property name="max" value="7"/>
      <!-- <property name="maxForVoid" value="2"/> -->
    </module>
    <module name="SimplifyBooleanExpression">
      <property name="severity" value="warning"/>
    </module>
    <module name="SimplifyBooleanReturn">
      <property name="severity" value="warning"/>
    </module>
    <module name="StringLiteralEquality"/>
    <module name="SuperClone"/>
    <module name="SuperFinalize"/>
    <!-- <module name="UnnecessaryParentheses"/> -->
    <module name="VariableDeclarationUsageDistance"/>

    <!-- Imports -->
    <module name="AvoidStarImport">
      <property name="severity" value="warning"/>
    </module>
    <!-- <module name="AvoidStaticImport"/> -->
    <!-- <module name="CustomImportOrder"/> -->
    <module name="IllegalImport">
      <property name="severity" value="warning"/>
    </module>
    <!-- <module name="ImportControl"/> -->
    <!-- <module name="ImportOrder"/> -->
    <module name="RedundantImport">
      <property name="severity" value="warning"/>
    </module>
    <module name="UnusedImports">
      <property name="severity" value="warning"/>
    </module>

    <!-- Javadoc Comments -->
    <module name="AtclauseOrder"/>
    <module name="JavadocMethod">
      <property name="severity" value="warning"/>
    </module>
    <!-- <module name="JavadocParagraph"/> -->
    <!-- <module name="JavadocStyle"/> -->
    <!-- <module name="JavadocTagContinuationIndentation"/> -->
    <module name="JavadocType">
      <property name="severity" value="warning"/>
    </module>
    <module name="JavadocVariable">
      <property name="severity" value="warning"/>
    </module>
    <module name="NonEmptyAtclauseDescription"/>
    <module name="SingleLineJavadoc"/>
    <module name="SummaryJavadocCheck"/>
    <!-- <module name="WriteTag"/> -->

    <!-- Metrics -->
    <!-- <module name="BooleanExpressionComplexity"/> -->
    <!-- <module name="ClassDataAbstractionCoupling"/> -->
    <!-- <module name="ClassFanOutComplexity"/> -->
    <!-- <module name="CyclomaticComplexity"/> -->
    <!-- <module name="JavaNCSS"/> -->
    <!-- <module name="NPathComplexity"/> -->

    <!-- Miscellaneous -->
    <module name="ArrayTypeStyle">
      <property name="severity" value="warning"/>
    </module>
    <module name="AvoidEscapedUnicodeCharacters"/>
    <module name="CommentsIndentation"/>
    <!-- <module name="DescendantToken"/> -->
    <module name="FinalParameters">
      <property name="tokens" value="METHOD_DEF,CTOR_DEF,LITERAL_CATCH"/>
    </module>
    <!-- TODO
    <module name="Indentation">
      <property name="basicOffset" value="2"/>
      <property name="braceAdjustment" value="1"/>
      <property name="caseIndent" value="2"/>
      <property name="throwsIndent" value="2"/>
      <property name="arrayInitIndent" value="2"/>
      <property name="lineWrappingIndentation" value="2"/>
    </module>
    -->
    <module name="OuterTypeFilename"/>
    <!--
    <module name="TodoComment">
      <property name="severity" value="warning"/>
    </module>
    -->
    <!--
    <module name="TrailingComment"/>
    -->
    <module name="UncommentedMain"/>
    <module name="UpperEll">
      <property name="severity" value="warning"/>
    </module>

    <!-- Modifiers -->
    <module name="ModifierOrder">
      <property name="severity" value="warning"/>
    </module>
    <module name="RedundantModifier">
      <property name="severity" value="warning"/>
    </module>

    <!-- Naming Conventions -->
    <!-- <module name="AbbreviationAsWordInName"/> -->
    <module name="AbstractClassName"/>
    <module name="CatchParameterName"/>
    <module name="ClassTypeParameterName"/>
    <module name="ConstantName">
      <property name="severity" value="warning"/>
    </module>
    <module name="InterfaceTypeParameterName"/>
    <module name="LocalFinalVariableName">
      <property name="severity" value="warning"/>
    </module>
    <module name="LocalVariableName">
      <property name="severity" value="warning"/>
    </module>
    <module name="MemberName">
      <property name="severity" value="warning"/>
    </module>
    <module name="MethodName">
      <property name="severity" value="warning"/>
    </module>
    <module name="MethodTypeParameterName"/>
    <module name="PackageName">
      <property name="severity" value="warning"/>
    </module>
    <module name="ParameterName">
      <property name="severity" value="warning"/>
    </module>
    <module name="StaticVariableName">
      <property name="severity" value="warning"/>
    </module>
    <module name="TypeName">
      <property name="severity" value="warning"/>
    </module>

    <!-- Regexp -->
    <!-- <module name="Regexp"/> -->
    <!-- <module name="RegexpSinglelineJava"/> -->

    <!-- Size Violations -->
    <module name="AnonInnerLength">
      <property name="max" value="100"/>
    </module>
    <!-- <module name="ExecutableStatementCount"/> -->
    <module name="MethodCount">
      <property name="maxTotal" value="110"/>
      <property name="maxPublic" value="110"/>
    </module>
    <module name="MethodLength">
      <property name="severity" value="warning"/>
      <property name="max" value="260"/>
    </module>
    <module name="OuterTypeNumber"/>
    <module name="ParameterNumber">
      <property name="severity" value="warning"/>
      <property name="max" value="31"/>
    </module>

    <!-- Whitespace  -->
    <module name="EmptyForInitializerPad"/>
    <module name="EmptyForIteratorPad">
      <property name="severity" value="warning"/>
    </module>
    <module name="EmptyLineSeparator">
      <property name="allowMultipleEmptyLinesInsideClassMembers" value="false"/>
      <property name="tokens" value="IMPORT, CLASS_DEF, INTERFACE_DEF, ENUM_DEF, STATIC_INIT, INSTANCE_INIT, METHOD_DEF, CTOR_DEF, VARIABLE_DEF"/>
    </module>
    <module name="GenericWhitespace"/>
    <module name="MethodParamPad"/>
    <module name="NoLineWrap">
      <property name="tokens" value="IMPORT, PACKAGE_DEF"/> <!-- TODO , STATIC_IMPORT -->
    </module>
    <module name="NoWhitespaceAfter">
      <property name="severity" value="warning"/>
      <property name="tokens" value="ARRAY_INIT, INC, DEC, UNARY_MINUS, UNARY_PLUS, BNOT, LNOT, DOT, TYPECAST, ARRAY_DECLARATOR, INDEX_OP"/> <!-- TODO , AT, METHOD_REF -->
    </module>
    <module name="NoWhitespaceBefore">
      <property name="severity" value="warning"/>
      <property name="tokens" value="COMMA, SEMI, POST_INC, POST_DEC, DOT, GENERIC_START, GENERIC_END"/> <!-- TODO , ELLIPSIS, METHOD_REF -->
    </module>
    <module name="OperatorWrap">
      <property name="severity" value="warning"/>
      <property name="tokens" value=""/>
    </module>
    <module name="ParenPad">
      <property name="severity" value="warning"/>
      <property name="tokens" value="ANNOTATION, ANNOTATION_FIELD_DEF, CTOR_CALL, CTOR_DEF, ENUM_CONSTANT_DEF, EXPR, LITERAL_CATCH, LITERAL_DO, LITERAL_FOR, LITERAL_IF, LITERAL_NEW, LITERAL_SWITCH, LITERAL_SYNCHRONIZED, LITERAL_WHILE, METHOD_CALL, METHOD_DEF, QUESTION, RESOURCE_SPECIFICATION, SUPER_CTOR_CALL"/> <!-- TODO , LAMBDA, DOT -->
    </module>
    <module name="SeparatorWrap">
      <property name="option" value="eol"/>
      <property name="tokens" value=""/>
    </module>
    <!-- TODO
    <module name="SingleSpaceSeparator"/>
    -->
    <module name="TypecastParenPad"/>
    <module name="WhitespaceAfter">
      <property name="severity" value="warning"/>
      <property name="tokens" value="COMMA, SEMI, LITERAL_IF, LITERAL_ELSE, LITERAL_WHILE, LITERAL_DO, LITERAL_FOR, DO_WHILE"/>
    </module>
    <module name="WhitespaceAround">
      <property name="severity" value="warning"/>
      <property name="tokens" value="ASSIGN,BAND,BAND_ASSIGN,BOR,BOR_ASSIGN,BSR,BSR_ASSIGN,BXOR,BXOR_ASSIGN,COLON,DIV,DIV_ASSIGN,DO_WHILE,EQUAL,GE,GT,LAMBDA,LAND,LCURLY,LE,LITERAL_ASSERT,LITERAL_CATCH,LITERAL_DO,LITERAL_ELSE,LITERAL_FINALLY,LITERAL_FOR,LITERAL_IF,LITERAL_RETURN,LITERAL_SYNCHRONIZED,LITERAL_TRY,LITERAL_WHILE,LOR,LT,MINUS,MINUS_ASSIGN,MOD,MOD_ASSIGN,NOT_EQUAL,PLUS,PLUS_ASSIGN,QUESTION,RCURLY,SL,SLIST,SL_ASSIGN,SR,SR_ASSIGN,STAR,STAR_ASSIGN,TYPE_EXTENSION_AND"/>
    </module>

  </module>

  <!-- Headers -->
   <module name="RegexpHeader">
    <property name="header" value="^/\*\n \* Copyright \(C\) (\d\d\d\d)(-(\d\d\d\d))?(,(\d\d\d\d)(-(\d\d\d\d))?)* Dipl.-Inform. Kai Hofmann. All rights reserved!\n \*/$"/>
    <property name="fileExtensions" value="java"/>
  </module>

  <!-- Javadocs -->
  <!-- <module name="JavadocPackage"/> -->

  <!-- Misc -->
  <module name="NewlineAtEndOfFile">
    <property name="lineSeparator" value="lf"/>
    <property name="fileExtensions" value="java,xml,dtd,properties,txt"/>
  </module>
  <module name="Translation"/>
  <module name="UniqueProperties"/>

  <!-- Regexp -->
  <!-- <module name="RegexpMultiline"/> -->
  <!-- <module name="RegexpOnFilename"/> -->
  <!-- <module name="RegexpSingleline"/> -->

  <!-- Size violations -->
  <module name="FileLength">
    <property name="severity" value="warning"/>
    <property name="max" value="20000"/>
  </module>

  <!-- Whitespace -->
  <module name="FileTabCharacter">
    <property name="severity" value="warning"/>
    <property name="fileExtensions" value="java,xml,dtd"/>
  </module>

</module>