Remove severity elements from checkstyle.xml

Remove `error` severity elements from `checkstyle.xml` and rely on the
default setting instead.

Closes gh-6442

spring-boot-parent/src/checkstyle/checkstyle.xml

@@ -1,145 +1,82 @@
 <?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="com.puppycrawl.tools.checkstyle.Checker">
-	<property name="severity" value="error"/>
-
 	<!-- Root Checks -->
 	<module name="com.puppycrawl.tools.checkstyle.checks.header.RegexpHeaderCheck">
-		<property name="severity" value="error"/>
 		<property name="headerFile" value="${checkstyle.header.file}" />
 		<property name="fileExtensions" value="java" />
 	</module>
 	<module name="com.puppycrawl.tools.checkstyle.checks.NewlineAtEndOfFileCheck">
-		<property name="severity" value="error"/>
 		<property name="lineSeparator" value="lf"/>
 	</module>
 
 	<!-- TreeWalker Checks -->
 	<module name="com.puppycrawl.tools.checkstyle.TreeWalker">
-		<property name="severity" value="error"/>
-
 		<!-- Annotations -->
 		<module name="com.puppycrawl.tools.checkstyle.checks.annotation.AnnotationUseStyleCheck">
-			<property name="severity" value="error"/>
 			<property name="elementStyle" value="compact" />
 		</module>
-		<module name="com.puppycrawl.tools.checkstyle.checks.annotation.MissingOverrideCheck">
-			<property name="severity" value="error"/>
-		</module>
-		<module name="com.puppycrawl.tools.checkstyle.checks.annotation.PackageAnnotationCheck">
-			<property name="severity" value="error"/>
-		</module>
+		<module name="com.puppycrawl.tools.checkstyle.checks.annotation.MissingOverrideCheck" />
+		<module name="com.puppycrawl.tools.checkstyle.checks.annotation.PackageAnnotationCheck" />
 		<module name="com.puppycrawl.tools.checkstyle.checks.annotation.AnnotationLocationCheck">
-			<property name="severity" value="error"/>
 			<property name="allowSamelineSingleParameterlessAnnotation"
 				value="false" />
 		</module>
 
 		<!-- Block Checks -->
 		<module name="com.puppycrawl.tools.checkstyle.checks.blocks.EmptyBlockCheck">
-			<property name="severity" value="error"/>
 			<property name="option" value="text" />
 		</module>
-		<module name="com.puppycrawl.tools.checkstyle.checks.blocks.LeftCurlyCheck">
-			<property name="severity" value="error"/>
-		</module>
+		<module name="com.puppycrawl.tools.checkstyle.checks.blocks.LeftCurlyCheck" />
 		<module name="com.puppycrawl.tools.checkstyle.checks.blocks.RightCurlyCheck">
-			<property name="severity" value="error"/>
 			<property name="option" value="alone" />
 		</module>
-		<module name="com.puppycrawl.tools.checkstyle.checks.blocks.NeedBracesCheck">
-			<property name="severity" value="error"/>
-		</module>
-		<module name="com.puppycrawl.tools.checkstyle.checks.blocks.AvoidNestedBlocksCheck">
-			<property name="severity" value="error"/>
-		</module>
+		<module name="com.puppycrawl.tools.checkstyle.checks.blocks.NeedBracesCheck" />
+		<module name="com.puppycrawl.tools.checkstyle.checks.blocks.AvoidNestedBlocksCheck" />
 
 		<!-- Class Design -->
-		<module name="com.puppycrawl.tools.checkstyle.checks.design.FinalClassCheck">
-			<property name="severity" value="error"/>
-		</module>
-		<module name="com.puppycrawl.tools.checkstyle.checks.design.InterfaceIsTypeCheck">
-			<property name="severity" value="error"/>
-		</module>
-		<module name="com.puppycrawl.tools.checkstyle.checks.design.HideUtilityClassConstructorCheck">
-			<property name="severity" value="error"/>
-		</module>
-		<module name="com.puppycrawl.tools.checkstyle.checks.design.MutableExceptionCheck">
-			<property name="severity" value="error"/>
-		</module>
-		<module name="com.puppycrawl.tools.checkstyle.checks.design.InnerTypeLastCheck">
-			<property name="severity" value="error"/>
-		</module>
-		<module name="com.puppycrawl.tools.checkstyle.checks.design.OneTopLevelClassCheck">
-			<property name="severity" value="error"/>
-		</module>
+		<module name="com.puppycrawl.tools.checkstyle.checks.design.FinalClassCheck" />
+		<module name="com.puppycrawl.tools.checkstyle.checks.design.InterfaceIsTypeCheck" />
+		<module name="com.puppycrawl.tools.checkstyle.checks.design.HideUtilityClassConstructorCheck" />
+		<module name="com.puppycrawl.tools.checkstyle.checks.design.MutableExceptionCheck" />
+		<module name="com.puppycrawl.tools.checkstyle.checks.design.InnerTypeLastCheck" />
+		<module name="com.puppycrawl.tools.checkstyle.checks.design.OneTopLevelClassCheck" />
 
 		<!-- Coding -->
-		<module name="com.puppycrawl.tools.checkstyle.checks.coding.CovariantEqualsCheck">
-			<property name="severity" value="error"/>
-		</module>
-		<module name="com.puppycrawl.tools.checkstyle.checks.coding.EmptyStatementCheck">
-			<property name="severity" value="error"/>
-		</module>
-		<module name="com.puppycrawl.tools.checkstyle.checks.coding.EqualsHashCodeCheck">
-			<property name="severity" value="error"/>
-		</module>
-		<module name="com.puppycrawl.tools.checkstyle.checks.coding.InnerAssignmentCheck">
-			<property name="severity" value="error"/>
-		</module>
-		<module name="com.puppycrawl.tools.checkstyle.checks.coding.SimplifyBooleanExpressionCheck">
-			<property name="severity" value="error"/>
-		</module>
-		<module name="com.puppycrawl.tools.checkstyle.checks.coding.SimplifyBooleanReturnCheck">
-			<property name="severity" value="error"/>
-		</module>
-		<module name="com.puppycrawl.tools.checkstyle.checks.coding.StringLiteralEqualityCheck">
-			<property name="severity" value="error"/>
-		</module>
+		<module name="com.puppycrawl.tools.checkstyle.checks.coding.CovariantEqualsCheck" />
+		<module name="com.puppycrawl.tools.checkstyle.checks.coding.EmptyStatementCheck" />
+		<module name="com.puppycrawl.tools.checkstyle.checks.coding.EqualsHashCodeCheck" />
+		<module name="com.puppycrawl.tools.checkstyle.checks.coding.InnerAssignmentCheck" />
+		<module name="com.puppycrawl.tools.checkstyle.checks.coding.SimplifyBooleanExpressionCheck" />
+		<module name="com.puppycrawl.tools.checkstyle.checks.coding.SimplifyBooleanReturnCheck" />
+		<module name="com.puppycrawl.tools.checkstyle.checks.coding.StringLiteralEqualityCheck" />
 		<module name="com.puppycrawl.tools.checkstyle.checks.coding.NestedForDepthCheck">
-			<property name="severity" value="error"/>
 			<property name="max" value="3" />
 		</module>
 		<module name="com.puppycrawl.tools.checkstyle.checks.coding.NestedIfDepthCheck">
-			<property name="severity" value="error"/>
 			<property name="max" value="3" />
 		</module>
 		<module name="com.puppycrawl.tools.checkstyle.checks.coding.NestedTryDepthCheck">
-			<property name="severity" value="error"/>
 			<property name="max" value="3" />
 		</module>
-		<module name="com.puppycrawl.tools.checkstyle.checks.coding.MultipleVariableDeclarationsCheck">
-			<property name="severity" value="error"/>
-		</module>
+		<module name="com.puppycrawl.tools.checkstyle.checks.coding.MultipleVariableDeclarationsCheck" />
 		<module name="com.puppycrawl.tools.checkstyle.checks.coding.RequireThisCheck">
-			<property name="severity" value="error"/>
 			<property name="checkMethods" value="false" />
 		</module>
-		<module name="com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheck">
-			<property name="severity" value="error"/>
-		</module>
+		<module name="com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheck" />
 
 		<!-- Imports -->
-		<module name="com.puppycrawl.tools.checkstyle.checks.imports.AvoidStarImportCheck">
-			<property name="severity" value="error"/>
-		</module>
+		<module name="com.puppycrawl.tools.checkstyle.checks.imports.AvoidStarImportCheck" />
 		<module name="com.puppycrawl.tools.checkstyle.checks.imports.AvoidStaticImportCheck">
-			<property name="severity" value="error"/>
 			<property name="excludes"
 				value="org.assertj.core.api.Assertions.*, org.junit.Assert.*, org.junit.Assume.*, org.junit.internal.matchers.ThrowableMessageMatcher.*, org.hamcrest.CoreMatchers.*, org.hamcrest.Matchers.*, org.springframework.boot.configurationprocessor.ConfigurationMetadataMatchers.*, org.springframework.boot.configurationprocessor.TestCompiler.*, org.springframework.boot.test.autoconfigure.AutoConfigurationImportedCondition.*, org.mockito.Mockito.*, org.mockito.BDDMockito.*, org.mockito.Matchers.*, org.springframework.restdocs.mockmvc.MockMvcRestDocumentation.*, org.springframework.restdocs.hypermedia.HypermediaDocumentation.*, org.springframework.test.web.servlet.request.MockMvcRequestBuilders.*, org.springframework.test.web.servlet.result.MockMvcResultMatchers.*, org.springframework.security.test.web.servlet.request.SecurityMockMvcRequestPostProcessors.*, org.springframework.security.test.web.servlet.setup.SecurityMockMvcConfigurers.*, org.springframework.hateoas.mvc.ControllerLinkBuilder.linkTo, org.springframework.test.web.client.match.MockRestRequestMatchers.*, org.springframework.test.web.client.response.MockRestResponseCreators.*" />
 		</module>
-		<module name="com.puppycrawl.tools.checkstyle.checks.imports.IllegalImportCheck">
-			<property name="severity" value="error"/>
-		</module>
-		<module name="com.puppycrawl.tools.checkstyle.checks.imports.RedundantImportCheck">
-			<property name="severity" value="error"/>
-		</module>
+		<module name="com.puppycrawl.tools.checkstyle.checks.imports.IllegalImportCheck" />
+		<module name="com.puppycrawl.tools.checkstyle.checks.imports.RedundantImportCheck" />
 		<module name="com.puppycrawl.tools.checkstyle.checks.imports.UnusedImportsCheck">
-			<property name="severity" value="error"/>
 			<property name="processJavadoc" value="true" />
 		</module>
 		<module name="com.puppycrawl.tools.checkstyle.checks.imports.ImportOrderCheck">
-			<property name="severity" value="error"/>
 			<property name="groups" value="java,/^javax?\./,*,org.springframework" />
 			<property name="ordered" value="true" />
 			<property name="separated" value="true" />
@@ -149,70 +86,50 @@
 
 		<!-- Javadoc Comments -->
 		<module name="com.puppycrawl.tools.checkstyle.checks.javadoc.JavadocTypeCheck">
-			<property name="severity" value="error"/>
 			<property name="scope" value="package"/>
 			<property name="authorFormat" value=".+\s.+"/>
 		</module>
 		<module name="com.puppycrawl.tools.checkstyle.checks.javadoc.JavadocMethodCheck">
-			<property name="severity" value="error"/>
 			<property name="allowMissingJavadoc" value="true" />
 		</module>
 		<module name="com.puppycrawl.tools.checkstyle.checks.javadoc.JavadocVariableCheck">
-			<property name="severity" value="error"/>
 			<property name="scope" value="public"/>
 		</module>
 		<module name="com.puppycrawl.tools.checkstyle.checks.javadoc.JavadocStyleCheck">
-			<property name="severity" value="error"/>
 			<property name="checkEmptyJavadoc" value="true"/>
 		</module>
-		<module name="com.puppycrawl.tools.checkstyle.checks.javadoc.NonEmptyAtclauseDescriptionCheck">
-			<property name="severity" value="error"/>
-		</module>
+		<module name="com.puppycrawl.tools.checkstyle.checks.javadoc.NonEmptyAtclauseDescriptionCheck" />
 		<module name="com.puppycrawl.tools.checkstyle.checks.javadoc.JavadocTagContinuationIndentationCheck">
-			<property name="severity" value="error"/>
 			<property name="offset" value="0"/>
 		</module>
 		<module name="com.puppycrawl.tools.checkstyle.checks.javadoc.AtclauseOrderCheck">
-			<property name="severity" value="error"/>
 			<property name="target" value="CLASS_DEF, INTERFACE_DEF, ENUM_DEF"/>
     		<property name="tagOrder" value="@param, @author, @since, @see, @version, @serial, @deprecated"/>
 		</module>
  		<module name="com.puppycrawl.tools.checkstyle.checks.javadoc.AtclauseOrderCheck">
-			<property name="severity" value="error"/>
 			<property name="target" value="METHOD_DEF, CTOR_DEF, VARIABLE_DEF"/>
     		<property name="tagOrder" value="@param, @return, @throws, @since, @deprecated, @see"/>
 		</module>
 
 		<!-- Miscellaneous -->
 		<module name="com.puppycrawl.tools.checkstyle.checks.indentation.CommentsIndentationCheck">
-			<property name="severity" value="error"/>
 			<property name="tokens" value="BLOCK_COMMENT_BEGIN"/>
 		</module>
-		<module name="com.puppycrawl.tools.checkstyle.checks.UpperEllCheck">
-			<property name="severity" value="error"/>
-		</module>
-		<module name="com.puppycrawl.tools.checkstyle.checks.ArrayTypeStyleCheck">
-			<property name="severity" value="error"/>
-		</module>
-		<module name="com.puppycrawl.tools.checkstyle.checks.OuterTypeFilenameCheck">
-			<property name="severity" value="error"/>
-		</module>
+		<module name="com.puppycrawl.tools.checkstyle.checks.UpperEllCheck" />
+		<module name="com.puppycrawl.tools.checkstyle.checks.ArrayTypeStyleCheck" />
+		<module name="com.puppycrawl.tools.checkstyle.checks.OuterTypeFilenameCheck" />
 
 		<!-- Modifiers -->
-		<module name="com.puppycrawl.tools.checkstyle.checks.modifier.RedundantModifierCheck">
-			<property name="severity" value="error"/>
-		</module>
+		<module name="com.puppycrawl.tools.checkstyle.checks.modifier.RedundantModifierCheck" />
 
 		<!-- Regexp -->
  		<module name="com.puppycrawl.tools.checkstyle.checks.regexp.RegexpSinglelineJavaCheck">
-			<property name="severity" value="error"/>
 			<property name="format" value="^\t* +\t*\S" />
 			<property name="message"
 				value="Line has leading space characters; indentation should be performed with tabs only." />
 			<property name="ignoreComments" value="true" />
 		</module>
  		<module name="com.puppycrawl.tools.checkstyle.checks.regexp.RegexpSinglelineJavaCheck">
-			<property name="severity" value="error"/>
  			<property name="maximum" value="0"/>
 			<property name="format" value="org\.mockito\.Mockito\.(when|doThrow|doAnswer)" />
 			<property name="message"
@@ -220,7 +137,6 @@
 			<property name="ignoreComments" value="true" />
 		</module>
  		<module name="com.puppycrawl.tools.checkstyle.checks.regexp.RegexpSinglelineJavaCheck">
-			<property name="severity" value="error"/>
  			<property name="maximum" value="0"/>
 			<property name="format" value="org\.junit\.Assert\.assert" />
 			<property name="message"
@@ -228,38 +144,21 @@
 			<property name="ignoreComments" value="true" />
 		</module>
 		<module name="com.puppycrawl.tools.checkstyle.checks.regexp.RegexpCheck">
-			<property name="severity" value="error"/>
 			<property name="format" value="[ \t]+$" />
 			<property name="illegalPattern" value="true" />
 			<property name="message" value="Trailing whitespace" />
 		</module>
 
 		<!-- Whitespace -->
-		<module name="com.puppycrawl.tools.checkstyle.checks.whitespace.GenericWhitespaceCheck">
-			<property name="severity" value="error"/>
-		</module>
-		<module name="com.puppycrawl.tools.checkstyle.checks.whitespace.MethodParamPadCheck">
-			<property name="severity" value="error"/>
-		</module>
+		<module name="com.puppycrawl.tools.checkstyle.checks.whitespace.GenericWhitespaceCheck" />
+		<module name="com.puppycrawl.tools.checkstyle.checks.whitespace.MethodParamPadCheck" />
 		<module name="com.puppycrawl.tools.checkstyle.checks.whitespace.NoWhitespaceAfterCheck" >
-			<property name="severity" value="error"/>
 			<property name="tokens" value="BNOT, DEC, DOT, INC, LNOT, UNARY_MINUS, UNARY_PLUS, ARRAY_DECLARATOR"/>
 		</module>
-		<module name="com.puppycrawl.tools.checkstyle.checks.whitespace.NoWhitespaceBeforeCheck">
-			<property name="severity" value="error"/>
-		</module>
-		<module name="com.puppycrawl.tools.checkstyle.checks.whitespace.ParenPadCheck">
-			<property name="severity" value="error"/>
-		</module>
-		<module name="com.puppycrawl.tools.checkstyle.checks.whitespace.TypecastParenPadCheck">
-			<property name="severity" value="error"/>
-		</module>
-		<module name="com.puppycrawl.tools.checkstyle.checks.whitespace.WhitespaceAfterCheck">
-			<property name="severity" value="error"/>
-		</module>
-		<module name="com.puppycrawl.tools.checkstyle.checks.whitespace.WhitespaceAroundCheck">
-			<property name="severity" value="error"/>
-		</module>
-
+		<module name="com.puppycrawl.tools.checkstyle.checks.whitespace.NoWhitespaceBeforeCheck" />
+		<module name="com.puppycrawl.tools.checkstyle.checks.whitespace.ParenPadCheck" />
+		<module name="com.puppycrawl.tools.checkstyle.checks.whitespace.TypecastParenPadCheck" />
+		<module name="com.puppycrawl.tools.checkstyle.checks.whitespace.WhitespaceAfterCheck" />
+		<module name="com.puppycrawl.tools.checkstyle.checks.whitespace.WhitespaceAroundCheck" />
  	</module>
 </module>