plugin not compatible with Eclipse Checkstyle Plug-in version 8.0.0

[ahaack]

After upgrading my eclipse checkstyle plugin to version 8.0.0 (https://sourceforge.net/projects/eclipse-cs/) I wasn't able to use checkstyle at all. It gave me following exception:

Checkstyle-Plugin: cannot initialize module TreeWalker - Unable to instantiate 'Jsr305Annotations'. class, it is also not possible to instantiate it as com.puppycrawl.tools.checkstyle.checks.annotationJsr305Annotations, com.puppycrawl.tools.checkstyle.checks.blocksJsr305Annotations, com.puppycrawl.tools.checkstyle.checks.codingJsr305Annotations, com.puppycrawl.tools.checkstyle.checks.designJsr305Annotations, com.puppycrawl.tools.checkstyle.checks.headerJsr305Annotations, com.puppycrawl.tools.checkstyle.checks.importsJsr305Annotations, com.puppycrawl.tools.checkstyle.checks.indentationJsr305Annotations, com.puppycrawl.tools.checkstyle.checks.javadocJsr305Annotations, com.puppycrawl.tools.checkstyle.checks.metricsJsr305Annotations, com.puppycrawl.tools.checkstyle.checks.modifierJsr305Annotations, com.puppycrawl.tools.checkstyle.checks.namingJsr305Annotations, com.puppycrawl.tools.checkstyle.checks.regexpJsr305Annotations, com.puppycrawl.tools.checkstyle.checks.sizesJsr305Annotations, com.puppycrawl.tools.checkstyle.checks.whitespaceJsr305Annotations, com.puppycrawl.tools.checkstyle.checksJsr305Annotations, com.puppycrawl.tools.checkstyle.filefiltersJsr305Annotations, com.puppycrawl.tools.checkstyle.filtersJsr305Annotations, com.puppycrawl.tools.checkstyleJsr305Annotations, com.github.sevntu.checkstyle.checks.annotationJsr305Annotations, com.github.sevntu.checkstyle.checks.codingJsr305Annotations, com.github.sevntu.checkstyle.checks.designJsr305Annotations, com.github.sevntu.checkstyle.checks.namingJsr305Annotations, com.github.sevntu.checkstyle.checks.sizesJsr305Annotations, com.github.sevntu.checkstyle.checksJsr305Annotations, com.github.sevntu.checkstyleJsr305Annotations, de.bjrke.checkstyle.jsr305.Jsr305Annotations, Jsr305AnnotationsCheck, com.puppycrawl.tools.checkstyle.checks.annotationJsr305AnnotationsCheck, com.puppycrawl.tools.checkstyle.checks.blocksJsr305AnnotationsCheck, com.puppycrawl.tools.checkstyle.checks.codingJsr305AnnotationsCheck, com.puppycrawl.tools.checkstyle.checks.designJsr305AnnotationsCheck, com.puppycrawl.tools.checkstyle.checks.headerJsr305AnnotationsCheck, com.puppycrawl.tools.checkstyle.checks.importsJsr305AnnotationsCheck, com.puppycrawl.tools.checkstyle.checks.indentationJsr305AnnotationsCheck, com.puppycrawl.tools.checkstyle.checks.javadocJsr305AnnotationsCheck, com.puppycrawl.tools.checkstyle.checks.metricsJsr305AnnotationsCheck, com.puppycrawl.tools.checkstyle.checks.modifierJsr305AnnotationsCheck, com.puppycrawl.tools.checkstyle.checks.namingJsr305AnnotationsCheck, com.puppycrawl.tools.checkstyle.checks.regexpJsr305AnnotationsCheck, com.puppycrawl.tools.checkstyle.checks.sizesJsr305AnnotationsCheck, com.puppycrawl.tools.checkstyle.checks.whitespaceJsr305AnnotationsCheck, com.puppycrawl.tools.checkstyle.checksJsr305AnnotationsCheck, com.puppycrawl.tools.checkstyle.filefiltersJsr305AnnotationsCheck, com.puppycrawl.tools.checkstyle.filtersJsr305AnnotationsCheck, com.puppycrawl.tools.checkstyleJsr305AnnotationsCheck, com.github.sevntu.checkstyle.checks.annotationJsr305AnnotationsCheck, com.github.sevntu.checkstyle.checks.codingJsr305AnnotationsCheck, com.github.sevntu.checkstyle.checks.designJsr305AnnotationsCheck, com.github.sevntu.checkstyle.checks.namingJsr305AnnotationsCheck, com.github.sevntu.checkstyle.checks.sizesJsr305AnnotationsCheck, com.github.sevntu.checkstyle.checksJsr305AnnotationsCheck, com.github.sevntu.checkstyleJsr305AnnotationsCheck, de.bjrke.checkstyle.jsr305.Jsr305AnnotationsCheck. Please recheck that class name is specified as canonical name or read how to configure short name usage http://checkstyle.sourceforge.net/config.html#Packages. Please also recheck that provided ClassLoader to Checker is configured correctly.
	at com.puppycrawl.tools.checkstyle.Checker.setupChild(Checker.java:457)
	at com.puppycrawl.tools.checkstyle.api.AutomaticBean.configure(AutomaticBean.java:171)
	at net.sf.eclipsecs.core.builder.CheckerFactory.createCheckerInternal(CheckerFactory.java:290)
	at net.sf.eclipsecs.core.builder.CheckerFactory.createChecker(CheckerFactory.java:128)
	at net.sf.eclipsecs.core.builder.Auditor.runAudit(Auditor.java:141)
	at net.sf.eclipsecs.core.builder.CheckstyleBuilder.handleBuildSelection(CheckstyleBuilder.java:301)
	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.basicBuild(BuildManager.java:263)
	at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:403)
	at org.eclipse.core.internal.resources.Project$1.run(Project.java:551)
	at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2240)
	at org.eclipse.core.internal.resources.Project.internalBuild(Project.java:529)
	at org.eclipse.core.internal.resources.Project.build(Project.java:112)
	at net.sf.eclipsecs.core.jobs.BuildProjectJob.run(BuildProjectJob.java:87)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)

After downgrading to version 7.6.0 it works like a charm.

[bjrke]

First of all, sorry for my late answer

I've already hit the problem and there is a discussion in the eclipse-cs project
https://sourceforge.net/p/eclipse-cs/discussion/274377/thread/4ab4f095/

there is a general problem in checkstyles way of loading classes which can not work in eclipse's OSGI environment. So it has to be fixed in checkstyle.
checkstyle/checkstyle#4916

Please vote this issue up

Anyway I already fixed checkstyle-8 native support in e5fdf3c but I did not build a release because of the incompatibility against checkstyle in eclipse.

[bjrke]

eclipse-cs 8.5 is out and supports plugins again. This will fix this issue and I will make a release.