spring-security/etc/checkstyle/checkstyle-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>
	<suppress files=".*" checks="InnerAssignment" />
	<suppress files=".*" checks="InnerTypeLast" />
	<suppress files=".*" checks="InterfaceIsType" />
	<suppress files=".*" checks="JavadocMethod" />
	<suppress files=".*" checks="JavadocStyle" />
	<suppress files=".*" checks="JavadocTagContinuationIndentation" />
	<suppress files=".*" checks="JavadocType" />
	<suppress files=".*" checks="JavadocVariable" />
	<suppress files=".*" checks="ModifierOrder" />
	<suppress files=".*" checks="MultipleVariableDeclarations" />
	<suppress files=".*" checks="MutableException" />
	<suppress files=".*" checks="NeedBraces" />
	<suppress files=".*" checks="NestedIfDepth" />
	<suppress files=".*" checks="NewlineAtEndOfFile" />
	<suppress files=".*" checks="NonEmptyAtclauseDescription" />
	<suppress files=".*" checks="NoWhitespaceBefore" />
	<suppress files=".*" checks="OneTopLevelClass" />
	<suppress files=".*" checks="ParenPad" />
	<suppress files=".*" checks="RedundantImport" />
	<suppress files=".*" checks="RegexpSinglelineJava" />
	<suppress files=".*" checks="SimplifyBooleanExpression" />
	<suppress files=".*" checks="SimplifyBooleanReturn" />
	<suppress files=".*" checks="SpringAvoidStaticImport" />
	<suppress files=".*" checks="SpringCatch" />
	<suppress files=".*" checks="SpringHeader" />
	<suppress files=".*" checks="SpringHideUtilityClassConstructor" />
	<suppress files=".*" checks="SpringJavadoc" />
	<suppress files=".*" checks="SpringLambda" />
	<suppress files=".*" checks="SpringMethodOrder" />
	<suppress files=".*" checks="SpringMethodVisibility" />
	<suppress files=".*" checks="SpringTernary" />
	<suppress files=".*" checks="WhitespaceAfter" />
	<suppress files=".*" checks="WhitespaceAround" />

	<!-- Ignore third-party code -->
	<suppress files="BCrypt\.java|BCryptTests\.java" checks=".*"/>
	<suppress files="org[\\/]springframework[\\/]security[\\/]core[\\/]ComparableVersion\.java" checks=".*"/>
</suppressions>