Checkstyle error with latest checkstye plugin

[adangel]

When using the current checkstyle rules within eclipse and the latest checkstyle plugin from http://eclipse-cs.sourceforge.net/update/ the following exception is thrown and checkstyle is not executed inside eclipse:

com.puppycrawl.tools.checkstyle.api.CheckstyleException: cannot initialize module TreeWalker - Fehler beim Instanziieren der Klasse 'FileContentsHolder'. Es war auch nicht möglich, sie als com.puppycrawl.tools.checkstyle.checks.annotation.FileContentsHolder, com.puppycrawl.tools.checkstyle.checks.blocks.FileContentsHolder, com.puppycrawl.tools.checkstyle.checks.coding.FileContentsHolder, com.puppycrawl.tools.checkstyle.checks.design.FileContentsHolder, com.puppycrawl.tools.checkstyle.checks.header.FileContentsHolder, com.puppycrawl.tools.checkstyle.checks.imports.FileContentsHolder, com.puppycrawl.tools.checkstyle.checks.indentation.FileContentsHolder, com.puppycrawl.tools.checkstyle.checks.javadoc.FileContentsHolder, com.puppycrawl.tools.checkstyle.checks.metrics.FileContentsHolder, com.puppycrawl.tools.checkstyle.checks.modifier.FileContentsHolder, com.puppycrawl.tools.checkstyle.checks.naming.FileContentsHolder, com.puppycrawl.tools.checkstyle.checks.regexp.FileContentsHolder, com.puppycrawl.tools.checkstyle.checks.sizes.FileContentsHolder, com.puppycrawl.tools.checkstyle.checks.whitespace.FileContentsHolder, com.puppycrawl.tools.checkstyle.checks.FileContentsHolder, com.puppycrawl.tools.checkstyle.filefilters.FileContentsHolder, com.puppycrawl.tools.checkstyle.filters.FileContentsHolder, com.puppycrawl.tools.checkstyle.FileContentsHolder, FileContentsHolderCheck, com.puppycrawl.tools.checkstyle.checks.annotation.FileContentsHolderCheck, com.puppycrawl.tools.checkstyle.checks.blocks.FileContentsHolderCheck, com.puppycrawl.tools.checkstyle.checks.coding.FileContentsHolderCheck, com.puppycrawl.tools.checkstyle.checks.design.FileContentsHolderCheck, com.puppycrawl.tools.checkstyle.checks.header.FileContentsHolderCheck, com.puppycrawl.tools.checkstyle.checks.imports.FileContentsHolderCheck, com.puppycrawl.tools.checkstyle.checks.indentation.FileContentsHolderCheck, com.puppycrawl.tools.checkstyle.checks.javadoc.FileContentsHolderCheck, com.puppycrawl.tools.checkstyle.checks.metrics.FileContentsHolderCheck, com.puppycrawl.tools.checkstyle.checks.modifier.FileContentsHolderCheck, com.puppycrawl.tools.checkstyle.checks.naming.FileContentsHolderCheck, com.puppycrawl.tools.checkstyle.checks.regexp.FileContentsHolderCheck, com.puppycrawl.tools.checkstyle.checks.sizes.FileContentsHolderCheck, com.puppycrawl.tools.checkstyle.checks.whitespace.FileContentsHolderCheck, com.puppycrawl.tools.checkstyle.checks.FileContentsHolderCheck, com.puppycrawl.tools.checkstyle.filefilters.FileContentsHolderCheck, com.puppycrawl.tools.checkstyle.filters.FileContentsHolderCheck, com.puppycrawl.tools.checkstyle.FileContentsHolderCheck zu instanziieren. Bitte prüfen Sie, dass der Klassenname als kanonischer Name angegeben wurde oder lesen Sie, wie Sie abgekürzte Namen konfigurieren: http://checkstyle.sourceforge.net/config.html#Packages. Bitte prüfen Sie auch, dass der angegebene ClassLoader des Checkers richtig konfiguriert ist.
	at com.puppycrawl.tools.checkstyle.Checker.setupChild(Checker.java:464)
	at com.puppycrawl.tools.checkstyle.api.AutomaticBean.configure(AutomaticBean.java:197)
	at net.sf.eclipsecs.core.builder.CheckerFactory.createCheckerInternal(CheckerFactory.java:299)
	at net.sf.eclipsecs.core.builder.CheckerFactory.createChecker(CheckerFactory.java:133)
	at net.sf.eclipsecs.core.builder.Auditor.runAudit(Auditor.java:141)
	at net.sf.eclipsecs.core.builder.CheckstyleBuilder.handleBuildSelection(CheckstyleBuilder.java:306)
	at net.sf.eclipsecs.core.builder.CheckstyleBuilder.build(CheckstyleBuilder.java:172)
	at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:735)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:206)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:246)
	at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:301)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:304)
	at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:360)
	at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:383)
	at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:142)
	at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:232)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:56)
Caused by: com.puppycrawl.tools.checkstyle.api.CheckstyleException: Fehler beim Instanziieren der Klasse 'FileContentsHolder'. Es war auch nicht möglich, sie als com.puppycrawl.tools.checkstyle.checks.annotation.FileContentsHolder, com.puppycrawl.tools.checkstyle.checks.blocks.FileContentsHolder, com.puppycrawl.tools.checkstyle.checks.coding.FileContentsHolder, com.puppycrawl.tools.checkstyle.checks.design.FileContentsHolder, com.puppycrawl.tools.checkstyle.checks.header.FileContentsHolder, com.puppycrawl.tools.checkstyle.checks.imports.FileContentsHolder, com.puppycrawl.tools.checkstyle.checks.indentation.FileContentsHolder, com.puppycrawl.tools.checkstyle.checks.javadoc.FileContentsHolder, com.puppycrawl.tools.checkstyle.checks.metrics.FileContentsHolder, com.puppycrawl.tools.checkstyle.checks.modifier.FileContentsHolder, com.puppycrawl.tools.checkstyle.checks.naming.FileContentsHolder, com.puppycrawl.tools.checkstyle.checks.regexp.FileContentsHolder, com.puppycrawl.tools.checkstyle.checks.sizes.FileContentsHolder, com.puppycrawl.tools.checkstyle.checks.whitespace.FileContentsHolder, com.puppycrawl.tools.checkstyle.checks.FileContentsHolder, com.puppycrawl.tools.checkstyle.filefilters.FileContentsHolder, com.puppycrawl.tools.checkstyle.filters.FileContentsHolder, com.puppycrawl.tools.checkstyle.FileContentsHolder, FileContentsHolderCheck, com.puppycrawl.tools.checkstyle.checks.annotation.FileContentsHolderCheck, com.puppycrawl.tools.checkstyle.checks.blocks.FileContentsHolderCheck, com.puppycrawl.tools.checkstyle.checks.coding.FileContentsHolderCheck, com.puppycrawl.tools.checkstyle.checks.design.FileContentsHolderCheck, com.puppycrawl.tools.checkstyle.checks.header.FileContentsHolderCheck, com.puppycrawl.tools.checkstyle.checks.imports.FileContentsHolderCheck, com.puppycrawl.tools.checkstyle.checks.indentation.FileContentsHolderCheck, com.puppycrawl.tools.checkstyle.checks.javadoc.FileContentsHolderCheck, com.puppycrawl.tools.checkstyle.checks.metrics.FileContentsHolderCheck, com.puppycrawl.tools.checkstyle.checks.modifier.FileContentsHolderCheck, com.puppycrawl.tools.checkstyle.checks.naming.FileContentsHolderCheck, com.puppycrawl.tools.checkstyle.checks.regexp.FileContentsHolderCheck, com.puppycrawl.tools.checkstyle.checks.sizes.FileContentsHolderCheck, com.puppycrawl.tools.checkstyle.checks.whitespace.FileContentsHolderCheck, com.puppycrawl.tools.checkstyle.checks.FileContentsHolderCheck, com.puppycrawl.tools.checkstyle.filefilters.FileContentsHolderCheck, com.puppycrawl.tools.checkstyle.filters.FileContentsHolderCheck, com.puppycrawl.tools.checkstyle.FileContentsHolderCheck zu instanziieren. Bitte prüfen Sie, dass der Klassenname als kanonischer Name angegeben wurde oder lesen Sie, wie Sie abgekürzte Namen konfigurieren: http://checkstyle.sourceforge.net/config.html#Packages. Bitte prüfen Sie auch, dass der angegebene ClassLoader des Checkers richtig konfiguriert ist.
	at com.puppycrawl.tools.checkstyle.PackageObjectFactory.createModule(PackageObjectFactory.java:208)
	at com.puppycrawl.tools.checkstyle.TreeWalker.setupChild(TreeWalker.java:166)
	at com.puppycrawl.tools.checkstyle.api.AutomaticBean.configure(AutomaticBean.java:197)
	at com.puppycrawl.tools.checkstyle.Checker.setupChild(Checker.java:459)
	... 18 more

Seems like the module "FileContentsHolderCheck" was renamed/moved/removed. It was removed with checkstyle 8.2 (see release notes):

remove FileContentsHolder module as FileContents object is available for filters on TreeWalker in TreeWalkerAudit Event. Author: Timur, Roman Ivanov #3573

[jsotuyod]

Just removing it should work, but we should also update the checkstyle version used by Maven.