rtrigo
rtrigo

Reputation: 529

Eclipse null pointer exception when invoking JFace plugin

I have eclipse Mars on CentOS and I can't reach "java build path", "deployment assembly", "project facets" and some other tabs in my project's properties. A Problems occurred after invoking code from plug-in "org.eclipse.jface". error windows comes up so I attached the screenshot of its details. I searched and tried a lot of solutions (including cleaning projects, switching workspaces, create a new project, removing .classpath, .project and .settings, starting eclipse with --clean, clean IDE install, changing JDK), but none worked so far. Did anyone beat this?

enter image description here

EDIT: Exception stack trace text

java.lang.NullPointerException
at org.eclipse.swt.widgets.TabFolder.gtk_switch_page(TabFolder.java:490)
at org.eclipse.swt.widgets.Widget.windowProc(Widget.java:1994)
at org.eclipse.swt.widgets.Display.windowProc(Display.java:4723)
at org.eclipse.swt.internal.gtk.OS._gtk_widget_show(Native Method)
at org.eclipse.swt.internal.gtk.OS.gtk_widget_show(OS.java:14720)
at org.eclipse.swt.widgets.TabFolder.createItem(TabFolder.java:274)
at org.eclipse.swt.widgets.TabItem.createWidget(TabItem.java:123)
at org.eclipse.swt.widgets.TabItem.<init>(TabItem.java:75)
at org.eclipse.jst.servlet.ui.internal.WebModuleDependencyPageProvider.createRootControl(WebModuleDependencyPageProvider.java:77)
at org.eclipse.wst.common.componentcore.ui.propertypage.ModuleAssemblyRootPage.createContents(ModuleAssemblyRootPage.java:204)
at org.eclipse.jface.preference.PreferencePage.createControl(PreferencePage.java:241)
at org.eclipse.wst.common.componentcore.ui.propertypage.ModuleAssemblyRootPage.createControl(ModuleAssemblyRootPage.java:346)
at org.eclipse.jface.preference.PreferenceDialog.createPageControl(PreferenceDialog.java:1450)
at org.eclipse.jface.preference.PreferenceDialog$13.run(PreferenceDialog.java:1217)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:50)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:173)
at org.eclipse.jface.preference.PreferenceDialog.showPage(PreferenceDialog.java:1209)
at org.eclipse.ui.internal.dialogs.FilteredPreferenceDialog.showPage(FilteredPreferenceDialog.java:608)
at org.eclipse.jface.preference.PreferenceDialog$9$1.run(PreferenceDialog.java:675)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.jface.preference.PreferenceDialog$9.selectionChanged(PreferenceDialog.java:670)
at org.eclipse.jface.viewers.StructuredViewer$3.run(StructuredViewer.java:877)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:50)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:173)
at org.eclipse.jface.viewers.StructuredViewer.firePostSelectionChanged(StructuredViewer.java:874)
at org.eclipse.jface.viewers.StructuredViewer.handlePostSelect(StructuredViewer.java:1243)
at org.eclipse.jface.viewers.StructuredViewer$5.widgetSelected(StructuredViewer.java:1269)
at org.eclipse.jface.util.OpenStrategy.firePostSelectionEvent(OpenStrategy.java:265)
at org.eclipse.jface.util.OpenStrategy.access$5(OpenStrategy.java:259)
at org.eclipse.jface.util.OpenStrategy$1$2.run(OpenStrategy.java:440)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3794)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3433)
at org.eclipse.jface.window.Window.runEventLoop(Window.java:827)
at org.eclipse.jface.window.Window.open(Window.java:803)
at org.eclipse.ui.dialogs.PropertyDialogAction.run(PropertyDialogAction.java:157)
at org.eclipse.jface.action.Action.runWithEvent(Action.java:473)
at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:595)
at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:511)
at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:420)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4481)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1327)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3819)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3430)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1127)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1018)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:156)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:654)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:598)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:139)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:669)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:608)
at org.eclipse.equinox.launcher.Main.run(Main.java:1515)
at org.eclipse.equinox.launcher.Main.main(Main.java:1488)

EDIT2: Thanks everyone for helping. The way I solved this: update eclipse like @howgler said, import to new workspace and clean every project. If needed, import to another workspace. Do not forget to backup old workspace, as it may change due to version differences.

Upvotes: 1

Views: 2594

Answers (1)

howlger
howlger

Reputation: 34275

The known bug has been fixed in Eclipse Oxygen.0 (4.7.0).

An update from the no longer maintained Eclipse Mars (4.5) to Eclipse Oxygen (4.7) should solve your problem.

Upvotes: 2

Related Questions