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XViewer in RCP View: got NoClassDefFoundError [message #600182]

Tue, 31 August 2010 10:33

Peter Pan

Messages: 2
Registered: August 2010

Junior Member

Hi,

I have tried to use XViewer in a RCP based application.

1. Because the download link on nebula download page is no more functional, i had tried to pack a jar with source codes.

2. In my RCP application, i have used this jar as other plugin jar dependencies.

3. I had tried to integrate XViewer in a ViewPart, but have got

Could not create the view: Plug-in "plugin name XXX" was unable to instantiate class "XXX.information.XViewerView".
java.lang.NoClassDefFoundError: org/eclipse/jface/viewers/TreeViewer

4. have also tried a treeviewer in this viewPart , no exception happens.

has any one idea? Much thanks.

ps. Exception printout

java.lang.NoClassDefFoundError: org/eclipse/jface/viewers/TreeViewer
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(Unknown Source)
at java.lang.ClassLoader.defineClass(Unknown Source)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.def ineClass(DefaultClassLoader.java:183)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.defineC lass(ClasspathManager.java:576)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findCla ssImpl(ClasspathManager.java:546)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLoc alClassImpl(ClasspathManager.java:477)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLoc alClass_LockClassLoader(ClasspathManager.java:465)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLoc alClass(ClasspathManager.java:445)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.fin dLocalClass(DefaultClassLoader.java:211)
at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass (BundleLoader.java:381)
at org.eclipse.osgi.internal.loader.SingleSourcePackage.loadCla ss(SingleSourcePackage.java:33)
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInter nal(BundleLoader.java:454)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(Bund leLoader.java:410)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(Bund leLoader.java:398)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loa dClass(DefaultClassLoader.java:105)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
at java.lang.Class.getConstructor0(Unknown Source)
at java.lang.Class.newInstance0(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI .createExecutableExtension(RegistryStrategyOSGI.java:170)
at org.eclipse.core.internal.registry.ExtensionRegistry.createE xecutableExtension(ExtensionRegistry.java:874)
at org.eclipse.core.internal.registry.ConfigurationElement.crea teExecutableExtension(ConfigurationElement.java:243)
at org.eclipse.core.internal.registry.ConfigurationElementHandl e.createExecutableExtension(ConfigurationElementHandle.java: 51)
at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(Work benchPlugin.java:259)
at org.eclipse.ui.internal.registry.ViewDescriptor.createView(V iewDescriptor.java:63)
at org.eclipse.ui.internal.ViewReference.createPartHelper(ViewR eference.java:324)
at org.eclipse.ui.internal.ViewReference.createPart(ViewReferen ce.java:226)
at org.eclipse.ui.internal.WorkbenchPartReference.getPart(Workb enchPartReference.java:595)
at org.eclipse.ui.internal.Perspective.showView(Perspective.jav a:2229)
at org.eclipse.ui.internal.WorkbenchPage.busyShowView(Workbench Page.java:1067)
at org.eclipse.ui.internal.WorkbenchPage$20.run(WorkbenchPage.j ava:3816)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator .java:70)
at org.eclipse.ui.internal.WorkbenchPage.showView(WorkbenchPage .java:3813)
at org.eclipse.ui.internal.WorkbenchPage.showView(WorkbenchPage .java:3789)
at org.eclipse.ui.handlers.ShowViewHandler.openView(ShowViewHan dler.java:165)
at org.eclipse.ui.handlers.ShowViewHandler.openOther(ShowViewHa ndler.java:109)
at org.eclipse.ui.handlers.ShowViewHandler.execute(ShowViewHand ler.java:77)
at org.eclipse.ui.internal.handlers.HandlerProxy.execute(Handle rProxy.java:294)
at org.eclipse.core.commands.Command.executeWithChecks(Command. java:476)
at org.eclipse.core.commands.ParameterizedCommand.executeWithCh ecks(ParameterizedCommand.java:508)
at org.eclipse.ui.internal.handlers.HandlerService.executeComma nd(HandlerService.java:169)
at org.eclipse.ui.internal.handlers.SlaveHandlerService.execute Command(SlaveHandlerService.java:241)
at org.eclipse.ui.menus.CommandContributionItem.handleWidgetSel ection(CommandContributionItem.java:770)
at org.eclipse.ui.menus.CommandContributionItem.access$10(Comma ndContributionItem.java:756)
at org.eclipse.ui.menus.CommandContributionItem$5.handleEvent(C ommandContributionItem.java:746)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java :84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1003)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.ja va:3880)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java :3473)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.jav a:2405)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2369)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:22 21)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:500)
at org.eclipse.core.databinding.observable.Realm.runWithDefault (Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:493)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:149)
at Application.start(Application.java:27)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(Eclips eAppHandle.java:194)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:368)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:179)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java: 559)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:514)
at org.eclipse.equinox.launcher.Main.run(Main.java:1311)
at org.eclipse.equinox.launcher.Main.main(Main.java:1287)
Caused by: java.lang.ClassNotFoundException: org.eclipse.jface.viewers.TreeViewer
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInter nal(BundleLoader.java:494)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(Bund leLoader.java:410)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(Bund leLoader.java:398)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loa dClass(DefaultClassLoader.java:105)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 73 more

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