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  1. ,
    via Stack Overflow by ERJAN

    This exception occurs when using an older version of java. Mainly when trying to run a jar compiled with a newer Java version in an older Java version. We can avoid this issue by executing the jar in the same version which it was compiled.

Solutions on the web

via pmd by sivaprakashcg
, 1 year ago
An error occurred while automatically activating bundle net.sourceforge.pmd.eclipse.plugin (1831).
via GitHub by reprogrammer
, 1 year ago
An error occurred while automatically activating bundle org.tigris.subversion.subclipse.ui (568).
via Stack Overflow by JShmay
, 2 years ago
An error occurred while automatically activating bundle org.erlide.ui (469).
via bitbucket.org by Unknown author, 2 years ago
An error occurred while automatically activating bundle com.vectrace.MercurialEclipse (250).
org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter$TerminatingClassNotFoundException: An error occurred while automatically activating bundle net.sourceforge.pmd.eclipse.plugin (1831). at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(Unknown Source) at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(Unknown Source) at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(Unknown Source) at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(Unknown Source) at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(Unknown Source) at org.eclipse.osgi.internal.loader.BundleLoader.findClass(Unknown Source) at org.eclipse.osgi.internal.loader.BundleLoader.findClass(Unknown Source) at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at org.eclipse.osgi.internal.loader.BundleLoader.loadClass(Unknown Source) at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(Unknown Source) at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(Unknown Source) at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(Unknown Source) at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(Unknown Source) at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(Unknown Source) at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(Unknown Source) at org.eclipse.ui.internal.WorkbenchPlugin$1.run(Unknown Source) at org.eclipse.swt.custom.BusyIndicator.showWhile(Unknown Source) at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(Unknown Source) at org.eclipse.ui.internal.decorators.LightweightDecoratorDefinition$1.run(Unknown Source) at org.eclipse.core.runtime.SafeRunner.run(Unknown Source) at org.eclipse.core.runtime.Platform.run(Unknown Source) at org.eclipse.ui.internal.decorators.LightweightDecoratorDefinition.internalGetDecorator(Unknown Source) at org.eclipse.ui.internal.decorators.LightweightDecoratorDefinition.decorate(Unknown Source) at org.eclipse.ui.internal.decorators.LightweightDecoratorManager$LightweightRunnable.run(Unknown Source) at org.eclipse.core.runtime.SafeRunner.run(Unknown Source) at org.eclipse.ui.internal.decorators.LightweightDecoratorManager.decorate(Unknown Source) at org.eclipse.ui.internal.decorators.LightweightDecoratorManager.getDecorations(Unknown Source) at org.eclipse.ui.internal.decorators.DecorationScheduler$1.ensureResultCached(Unknown Source) at org.eclipse.ui.internal.decorators.DecorationScheduler$1.run(Unknown Source) at org.eclipse.core.internal.jobs.Worker.run(Unknown Source)Caused by: org.osgi.framework.BundleException: Exception in net.sourceforge.pmd.eclipse.plugin.PMDPlugin.start() of bundle net.sourceforge.pmd.eclipse.plugin. at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(Unknown Source) at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(Unknown Source) at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(Unknown Source) at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(Unknown Source) at org.eclipse.osgi.framework.util.SecureAction.start(Unknown Source) at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(Unknown Source) ... 31 moreCaused by: java.lang.UnsupportedClassVersionError: JVMCFRE003 bad major version; class=net/sourceforge/pmd/RuleSetFactory, offset=6 at java.lang.ClassLoader.defineClassImpl(Native Method) at java.lang.ClassLoader.defineClass(Unknown Source) at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.defineClass(Unknown Source) at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.defineClass(Unknown Source) at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findClassImpl(Unknown Source) at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClassImpl(Unknown Source) at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass_LockClassLoader(Unknown Source) at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(Unknown Source) at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(Unknown Source) at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(Unknown Source) at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(Unknown Source) at org.eclipse.osgi.internal.loader.BundleLoader.findClass(Unknown Source) at org.eclipse.osgi.internal.loader.BundleLoader.findClass(Unknown Source) at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at net.sourceforge.pmd.eclipse.plugin.PMDPlugin.registerStandardRuleSets(Unknown Source) at net.sourceforge.pmd.eclipse.plugin.PMDPlugin.start(Unknown Source) at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Unknown Source) ... 37 more