java-checkstyle-config/conf/example-suppressions.xml

<?xml version="1.0"?>

<!DOCTYPE suppressions PUBLIC
        "-//Checkstyle//DTD SuppressionFilter Configuration 1.2//EN"
        "https://checkstyle.org/dtds/suppressions_1_2.dtd">

<suppressions>
    <!-- can't split long messages between lines -->
    <suppress id="lineLengthXml" files="google_checks\.xml" lines="56,126"/>
    <!-- don't validate generated files -->
    <suppress id="lineLengthXml" files="releasenotes\.xml"/>
    <suppress id="lineLengthXml" files="[\\/]meta[\\/]"/>

    <suppress checks="FileLength"
              files="TokenTypes.java|IndentationCheckTest.java"
              lines="1"/>

    <!-- illegal words are part of Javadoc -->
    <suppress checks="TodoComment" files=".*TodoCommentCheck\.java"/>

    <!-- 'Abstract' pattern is used to show it is checking for abstract class name -->
    <suppress checks="AbstractClassNameCheck"
              files="AbstractClassNameCheck.java"/>
    <!-- test should be named as their main class -->
    <suppress checks="AbstractClassNameCheck"
              files="AbstractCheckTest.java|AbstractClassNameCheckTest.java|
                    |AbstractJavadocCheckTest.java|
                    |AbstractViolationReporterTest.java|AbstractFileSetCheckTest.java"/>

    <!-- Tone down the checking for test code -->
    <suppress checks="ExecutableStatementCount|JavaNCSS|BooleanExpressionComplexity|
                    |NestedIfDepth|MethodLength"
              files="[\\/]XdocsPagesTest\.java"/>

    <!-- till https://github.com/checkstyle/checkstyle/issues/6336 -->
    <suppress checks="JavadocMethod" files=".*AbstractIndentationTestSupport\.java"/>
    <suppress checks="JavadocMethod" files=".*AbstractModuleTestSupport\.java"/>
    <suppress checks="JavadocMethod" files=".*AbstractXpathTestSupport\.java"/>
    <suppress checks="JavadocMethod" files=".*AbstractModuleTestSupport\.java"/>
    <suppress checks="JavadocMethod" files=".*AbstractPathTestSupport\.java"/>
    <suppress checks="JavadocMethod" files=".*AbstractXmlTestSupport\.java"/>

    <!-- The Check generates too many violations, fixing them will make code unmanageable. -->
    <suppress checks="MagicNumber" files="(ParseTreeTablePresentation|MainFrame)\.java"/>

    <!-- Methods that build fake AST are very long -->
    <suppress checks="MethodLength" files=".*(Generated)?Java(doc)?TokenTypesTest\.java"/>
    <suppress checks="ExecutableStatementCount"
              files=".*(Generated)?Java(doc)?TokenTypesTest\.java"/>
    <suppress checks="JavaNCSS" files=".*(Generated)?Java(doc)?TokenTypesTest\.java"/>
    <suppress checks="ExecutableStatementCount" files=".*IllegalInstantiationCheckTest\.java"/>
    <suppress checks="ExecutableStatementCount" files=".*Main\.java"/>

    <!-- Till https://github.com/checkstyle/checkstyle/issues/1854 -->
    <suppress checks="TrailingComment"
              files="(InnerAssignmentCheck\.java|OperatorWrapCheck\.java|
              |AbbreviationAsWordInNameCheckTest\.java)"/>

    <!-- Fixing these cases will decrease code readability -->
    <suppress checks="MultipleStringLiterals" files="JavadocStyleCheck\.java|XMLLogger\.java"/>

    <!-- There are a lot of setters/getters in the Check.
       A small number of methods is left for Check's logic -->
    <suppress checks="MethodCount" files="[\\/]JavadocMethodCheck.java$"/>
    <!-- Apart from a complex logic there is a lot of small methods for a better readability. -->
    <suppress checks="MethodCount" files="[\\/]CommentsIndentationCheck.java$"/>
    <!-- VisibilityModifierCheck has 7 options which require 7 additional methods (setters) -->
    <suppress checks="MethodCount" files="[\\/]VisibilityModifierCheck.java$"/>
    <!-- RequireThisCheck has a hierarchy of nested classes which contains a lot of methods. -->
    <suppress checks="MethodCount" files="[\\/]RequireThisCheck.java$"/>

    <!-- we need that set of converters -->
    <suppress checks="ClassDataAbstractionCoupling" files="AutomaticBean\.java"/>
    <!-- they are aggregators of logic, usage a several of classes are ok -->
    <suppress checks="ClassDataAbstractionCoupling"
              files="(Checker|Main|CheckstyleAntTask|JavadocDetailNodeParser)\.java"/>
    <suppress checks="ClassDataAbstractionCoupling"
              files="(CheckerTest|AbstractModuleTestSupport|AbstractItModuleTestSupport|
                    |CheckstyleAntTaskTest|
                    |TranslationCheckTest|LocalizedMessageTest|AbstractFileSetCheckTest|
                    |AbstractCheckTest|AutomaticBeanTest)\.java"/>
    <suppress checks="ClassDataAbstractionCoupling" files="PropertyCacheFileTest\.java"/>
    <suppress checks="ClassDataAbstractionCoupling"
              files="XpathFileGeneratorAuditListenerTest\.java"/>
    <suppress checks="ClassFanOutComplexity" files="[\\/]Main\.java"/>
    <suppress checks="ClassFanOutComplexity" files="CheckstyleAntTask\.java"/>
    <suppress checks="ClassFanOutComplexity" files="CheckerTest\.java"/>
    <suppress checks="ClassFanOutComplexity" files="Checker\.java"/>
    <!-- a lot of GUI elements is OK -->
    <suppress checks="ClassDataAbstractionCoupling" files="(TreeTable|MainFrame)\.java"/>

    <!-- Should be fixed after moving
    https://github.com/sevntu-checkstyle/sevntu.checkstyle/blob/master/sevntu-checks/src/main/java/com/github/sevntu/checkstyle/checks/coding/ReturnCountExtendedCheck.java
    into the main repo, to allow skip guard sentences(or by topLinesToIgnoreCount) -->
    <suppress checks="ReturnCount" files="(ConfigurationLoader|LambdaHandler)\.java"/>

    <!-- HandlerFactory crosses allowed limit for executable statements -->
    <suppress checks="ExecutableStatementCount" files="HandlerFactory\.java"/>

    <suppress id="ImportControlTest" files="[\\/]powermock[\\/]"
              message=".* - org\.(powermock|mockito).*" />

    <suppress id="noSourceforgeNetLinks" files="[\\/]releasenotes.xml"/>
    <suppress id="noSourceforgeIoLinks" files="[\\/]google_style.xml" lines="31"/>
    <suppress id="noSourceforgeIoLinks" files="[\\/]sun_style.xml" lines="31"/>
    <suppress id="noSourceforgeIoLinks" files="[\\/]index.xml.vm"/>

    <!-- usage of div class="wrap-content" render even indented content properly -->
    <suppress id="noIndentationConfigExamples" files="[\\/]src[\\/]xdocs[\\/]writingchecks.xml"/>
    <suppress id="noIndentationConfigExamples"
              files="[\\/]src[\\/]xdocs[\\/]beginning_development.xml"/>

    <!-- Usage of unicode characters to assert the functioning of Xpath on escape character.  -->
    <suppress id="RegexpSinglelineJava" files="[\\/]XpathQueryGeneratorTest.java"/>

</suppressions>