打开eclipse,竟然package explorer出现了NullpointException
2014-08-12 09:22
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java.lang.NullPointerException at org.eclipse.m2e.jdt.internal.MavenClasspathContainerInitializer.initialize(MavenClasspathContainerInitializer.java:48) at org.eclipse.jdt.internal.core.JavaModelManager.initializeContainer(JavaModelManager.java:2707) at org.eclipse.jdt.internal.core.JavaModelManager$11.run(JavaModelManager.java:2613) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1975) at org.eclipse.jdt.internal.core.JavaModelManager.initializeAllContainers(JavaModelManager.java:2653) at org.eclipse.jdt.internal.core.JavaModelManager.getClasspathContainer(JavaModelManager.java:1845) at org.eclipse.jdt.core.JavaCore.getClasspathContainer(JavaCore.java:2705) at org.eclipse.jdt.internal.core.JavaProject.resolveClasspath(JavaProject.java:2645) at org.eclipse.jdt.internal.core.JavaProject.resolveClasspath(JavaProject.java:2783) at org.eclipse.jdt.internal.core.JavaProject.getResolvedClasspath(JavaProject.java:1915) at org.eclipse.jdt.internal.core.JavaProject.getClasspathEntryFor(JavaProject.java:1403) at org.eclipse.jdt.internal.core.JavaModelManager.createJarPackageFragmentRootFrom(JavaModelManager.java:975) at org.eclipse.jdt.internal.core.JavaModelManager.create(JavaModelManager.java:866) at org.eclipse.jdt.internal.core.JavaModelManager.create(JavaModelManager.java:827) at org.eclipse.jdt.core.JavaCore.create(JavaCore.java:2590) at org.eclipse.jdt.internal.ui.ResourceAdapterFactory.getAdapter(ResourceAdapterFactory.java:44) at org.eclipse.core.internal.adapter.AdapterFactoryProxy.getAdapter(AdapterFactoryProxy.java:80) at org.eclipse.core.internal.runtime.AdapterManager.getAdapter(AdapterManager.java:295) at org.eclipse.core.runtime.PlatformObject.getAdapter(PlatformObject.java:66) at org.eclipse.jdt.internal.ui.EditorInputAdapterFactory.getAdapter(EditorInputAdapterFactory.java:53) at org.eclipse.core.internal.adapter.AdapterFactoryProxy.getAdapter(AdapterFactoryProxy.java:80) at org.eclipse.core.internal.runtime.AdapterManager.getAdapter(AdapterManager.java:295) at org.eclipse.core.runtime.PlatformObject.getAdapter(PlatformObject.java:66) at org.eclipse.ui.part.FileEditorInput.getAdapter(FileEditorInput.java:263) at org.eclipse.jdt.ui.JavaUI.getEditorInputJavaElement(JavaUI.java:753) at org.eclipse.jdt.internal.ui.packageview.PackageExplorerPart.getInputFromEditor(PackageExplorerPart.java:1005) at org.eclipse.jdt.internal.ui.packageview.PackageExplorerPart.editorActivated(PackageExplorerPart.java:995) at org.eclipse.jdt.internal.ui.packageview.PackageExplorerPart.setLinkingEnabled(PackageExplorerPart.java:1271) at org.eclipse.jdt.internal.ui.packageview.PackageExplorerPart.createPartControl(PackageExplorerPart.java:548) at org.eclipse.ui.internal.ViewReference.createPartHelper(ViewReference.java:375) at org.eclipse.ui.internal.ViewReference.createPart(ViewReference.java:229) at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:595) at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:313) at org.eclipse.ui.internal.ViewPane.setVisible(ViewPane.java:529) at org.eclipse.ui.internal.presentations.PresentablePart.setVisible(PresentablePart.java:180) at org.eclipse.ui.internal.presentations.util.PresentablePartFolder.select(PresentablePartFolder.java:270) at org.eclipse.ui.internal.presentations.util.LeftToRightTabOrder.select(LeftToRightTabOrder.java:65) at org.eclipse.ui.internal.presentations.util.TabbedStackPresentation.selectPart(TabbedStackPresentation.java:473) at org.eclipse.ui.internal.PartStack.refreshPresentationSelection(PartStack.java:1254) at org.eclipse.ui.internal.PartStack.setSelection(PartStack.java:1207) at org.eclipse.ui.internal.PartStack.showPart(PartStack.java:1606) at org.eclipse.ui.internal.PartStack.replace(PartStack.java:914) at org.eclipse.ui.internal.PerspectiveHelper.addPart(PerspectiveHelper.java:400) at org.eclipse.ui.internal.Perspective.removeFastView(Perspective.java:1192) at org.eclipse.ui.internal.Perspective.removeFastView(Perspective.java:1167) at org.eclipse.ui.internal.WorkbenchPage.removeFastView(WorkbenchPage.java:2988) at org.eclipse.ui.internal.FastViewManager.makeFast(FastViewManager.java:380) at org.eclipse.ui.internal.FastViewManager.removeViewReference(FastViewManager.java:360) at org.eclipse.ui.internal.FastViewManager.restoreToPresentation(FastViewManager.java:665) at org.eclipse.ui.internal.ViewStack.setMinimized(ViewStack.java:155) at org.eclipse.ui.internal.PartStack.smartUnzoom(PartStack.java:1422) at org.eclipse.ui.internal.PartStack$3.runWithException(PartStack.java:1478) at org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31) at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:179) at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:150) at org.eclipse.swt.widgets.Display.syncExec(Display.java:4584) at org.eclipse.ui.internal.StartupThreading.runWithoutExceptions(StartupThreading.java:94) at org.eclipse.ui.internal.PartStack.setState(PartStack.java:1471) at org.eclipse.ui.internal.PartStack$1.setState(PartStack.java:145) at org.eclipse.ui.internal.presentations.util.TabbedStackPresentation$1.handleEvent(TabbedStackPresentation.java:76) at org.eclipse.ui.internal.presentations.util.AbstractTabFolder.fireEvent(AbstractTabFolder.java:269) at org.eclipse.ui.internal.presentations.util.AbstractTabFolder.fireEvent(AbstractTabFolder.java:274) at org.eclipse.ui.internal.presentations.util.AbstractTabFolder.handleDoubleClick(AbstractTabFolder.java:353) at org.eclipse.ui.internal.presentations.util.AbstractTabFolder$3.mouseDoubleClick(AbstractTabFolder.java:89) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:189) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4066) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3657) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2640) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2604) at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2438) at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:671) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:664) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:115) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) 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(EclipseStarter.java:369) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.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:619) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:574) at org.eclipse.equinox.launcher.Main.run(Main.java:1407)
关掉package explorer,再打开这个视图又好了。
从上述代码中,可以一窥eclipse的原理。
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