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WTP 0.7 (based on Eclipse 3.1) I somehow got my workspace into a state whereby it can't start JDT anymore. The log has many occurrences of the following on startup. None of the JDT views or editors can be created, and the Java builder cannot run, because the error occurred during JDT Core plug-in startup, so OSGi thinks it's not started. !MESSAGE An error occurred while automatically activating bundle org.eclipse.jdt.core (163). !STACK 0 org.osgi.framework.BundleException: Exception in org.eclipse.jdt.core.JavaCore.start() of bundle org.eclipse.jdt.core. at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:1013) at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:969) at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:321) at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:266) at org.eclipse.core.runtime.adaptor.EclipseClassLoader.findLocalClass(EclipseClassLoader.java:116) at org.eclipse.osgi.framework.internal.core.BundleLoader.findLocalClass(BundleLoader.java:337) at org.eclipse.osgi.framework.internal.core.SingleSourcePackage.loadClass(SingleSourcePackage.java:37) at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:386) at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:350) at org.eclipse.osgi.framework.adaptor.core.AbstractClassLoader.loadClass(AbstractClassLoader.java:78) at java.lang.ClassLoader.loadClass(ClassLoader.java:235) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302) at java.lang.Class.getDeclaredConstructors0(Native Method) at java.lang.Class.privateGetDeclaredConstructors(Class.java:1610) at java.lang.Class.getConstructor0(Class.java:1922) at java.lang.Class.getConstructor(Class.java:1019) at org.eclipse.core.internal.plugins.PluginDescriptor.internalDoPluginActivation(PluginDescriptor.java:415) at org.eclipse.core.internal.plugins.PluginDescriptor.doPluginActivation(PluginDescriptor.java:371) at org.eclipse.core.internal.plugins.PluginDescriptor.getPlugin(PluginDescriptor.java:340) at org.eclipse.core.internal.compatibility.PluginActivator.start(PluginActivator.java:28) at org.eclipse.osgi.framework.internal.core.BundleContextImpl$2.run(BundleContextImpl.java:994) at java.security.AccessController.doPrivileged(Native Method) at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:988) at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:969) at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:321) at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:266) at org.eclipse.core.runtime.adaptor.EclipseClassLoader.findLocalClass(EclipseClassLoader.java:116) at org.eclipse.osgi.framework.internal.core.BundleLoader.findLocalClass(BundleLoader.java:337) at org.eclipse.osgi.framework.internal.core.SingleSourcePackage.loadClass(SingleSourcePackage.java:37) at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:386) at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:350) at org.eclipse.osgi.framework.adaptor.core.AbstractClassLoader.loadClass(AbstractClassLoader.java:78) at java.lang.ClassLoader.loadClass(ClassLoader.java:235) at org.eclipse.osgi.framework.internal.core.BundleLoader.loadClass(BundleLoader.java:275) at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:227) at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractBundle.java:1259) at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:152) at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:142) at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:129) at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:48) at org.eclipse.ui.internal.WorkbenchPlugin$1.run(WorkbenchPlugin.java:240) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:69) at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlugin.java:236) at org.eclipse.ui.internal.decorators.FullDecoratorDefinition$1.run(FullDecoratorDefinition.java:63) at org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatform.java:1044) at org.eclipse.core.runtime.Platform.run(Platform.java:783) at org.eclipse.ui.internal.decorators.FullDecoratorDefinition.internalGetDecorator(FullDecoratorDefinition.java:58) at org.eclipse.ui.internal.decorators.FullDecoratorDefinition.decorateText(FullDecoratorDefinition.java:128) at org.eclipse.ui.internal.decorators.FullTextDecoratorRunnable.run(FullTextDecoratorRunnable.java:26) at org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatform.java:1044) at org.eclipse.core.runtime.Platform.run(Platform.java:783) at org.eclipse.ui.internal.decorators.DecoratorManager.safeDecorateText(DecoratorManager.java:343) at org.eclipse.ui.internal.decorators.DecoratorManager.decorateText(DecoratorManager.java:310) at org.eclipse.jface.viewers.DecoratingLabelProvider.getText(DecoratingLabelProvider.java:120) at org.eclipse.jface.viewers.DecoratingLabelProvider.updateLabel(DecoratingLabelProvider.java:208) at org.eclipse.jface.viewers.StructuredViewer.buildLabel(StructuredViewer.java:1855) at org.eclipse.jface.viewers.TreeViewer.doUpdateItem(TreeViewer.java:228) at org.eclipse.jface.viewers.AbstractTreeViewer$UpdateItemSafeRunnable.run(AbstractTreeViewer.java:85) at org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatform.java:1044) at org.eclipse.core.runtime.Platform.run(Platform.java:783) at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:44) at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:148) at org.eclipse.jface.viewers.AbstractTreeViewer.doUpdateItem(AbstractTreeViewer.java:621) at org.eclipse.jface.viewers.StructuredViewer$UpdateItemSafeRunnable.run(StructuredViewer.java:434) at org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatform.java:1044) at org.eclipse.core.runtime.Platform.run(Platform.java:783) at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:44) at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:148) at org.eclipse.jface.viewers.StructuredViewer.updateItem(StructuredViewer.java:1763) at org.eclipse.jface.viewers.AbstractTreeViewer.createTreeItem(AbstractTreeViewer.java:535) at org.eclipse.jface.viewers.AbstractTreeViewer$1.run(AbstractTreeViewer.java:514) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:69) at org.eclipse.jface.viewers.AbstractTreeViewer.createChildren(AbstractTreeViewer.java:494) at org.eclipse.jface.viewers.AbstractTreeViewer$5.run(AbstractTreeViewer.java:983) at org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1201) at org.eclipse.jface.viewers.AbstractTreeViewer.inputChanged(AbstractTreeViewer.java:973) at org.eclipse.jface.viewers.ContentViewer.setInput(ContentViewer.java:248) at org.eclipse.jface.viewers.StructuredViewer.setInput(StructuredViewer.java:1417) at org.eclipse.ui.views.navigator.ResourceNavigator.createPartControl(ResourceNavigator.java:266) at org.eclipse.ui.internal.ViewReference.createPartHelper(ViewReference.java:305) at org.eclipse.ui.internal.ViewReference.createPart(ViewReference.java:180) at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:552) at org.eclipse.ui.internal.WorkbenchPage$ActivationList.setActive(WorkbenchPage.java:3526) at org.eclipse.ui.internal.WorkbenchPage.restoreState(WorkbenchPage.java:2618) at org.eclipse.ui.internal.WorkbenchWindow.restoreState(WorkbenchWindow.java:1819) at org.eclipse.ui.internal.Workbench.doRestoreState(Workbench.java:2566) at org.eclipse.ui.internal.Workbench.access$14(Workbench.java:2515) at org.eclipse.ui.internal.Workbench$19.run(Workbench.java:1514) at org.eclipse.ui.internal.Workbench$16.run(Workbench.java:1263) at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:346) at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:291) at org.eclipse.jface.dialogs.ProgressMonitorDialog.run(ProgressMonitorDialog.java:447) at org.eclipse.ui.internal.Workbench.runStartupWithProgress(Workbench.java:1258) at org.eclipse.ui.internal.Workbench.restoreState(Workbench.java:1512) at org.eclipse.ui.internal.Workbench.access$12(Workbench.java:1491) at org.eclipse.ui.internal.Workbench$17.run(Workbench.java:1374) at org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatform.java:1044) at org.eclipse.core.runtime.Platform.run(Platform.java:783) at org.eclipse.ui.internal.Workbench.restoreState(Workbench.java:1318) at org.eclipse.ui.internal.WorkbenchConfigurer.restoreState(WorkbenchConfigurer.java:183) at org.eclipse.ui.application.WorkbenchAdvisor.openWindows(WorkbenchAdvisor.java:700) at org.eclipse.ui.internal.Workbench.init(Workbench.java:1034) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1636) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:367) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:143) at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:103) at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:226) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:376) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:163) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at org.eclipse.core.launcher.Main.invokeFramework(Main.java:334) at org.eclipse.core.launcher.Main.basicRun(Main.java:278) at org.eclipse.core.launcher.Main.run(Main.java:973) at org.eclipse.core.launcher.Main.main(Main.java:948) Caused by: java.lang.IllegalArgumentException: Path for project must have only one segment. at org.eclipse.core.internal.utils.Assert.isLegal(Assert.java:60) at org.eclipse.core.internal.resources.WorkspaceRoot.getProject(WorkspaceRoot.java:134) at org.eclipse.jdt.internal.core.JavaModel.getJavaProject(JavaModel.java:204) at org.eclipse.jdt.internal.core.JavaModelManager.loadVariablesAndContainers(JavaModelManager.java:1869) at org.eclipse.jdt.internal.core.JavaModelManager.startup(JavaModelManager.java:2485) at org.eclipse.jdt.core.JavaCore.start(JavaCore.java:4116) at org.eclipse.osgi.framework.internal.core.BundleContextImpl$2.run(BundleContextImpl.java:994) at java.security.AccessController.doPrivileged(Native Method) at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:988) ... 116 more Root exception: java.lang.IllegalArgumentException: Path for project must have only one segment. at org.eclipse.core.internal.utils.Assert.isLegal(Assert.java:60) at org.eclipse.core.internal.resources.WorkspaceRoot.getProject(WorkspaceRoot.java:134) at org.eclipse.jdt.internal.core.JavaModel.getJavaProject(JavaModel.java:204) at org.eclipse.jdt.internal.core.JavaModelManager.loadVariablesAndContainers(JavaModelManager.java:1869) at org.eclipse.jdt.internal.core.JavaModelManager.startup(JavaModelManager.java:2485) at org.eclipse.jdt.core.JavaCore.start(JavaCore.java:4116) at org.eclipse.osgi.framework.internal.core.BundleContextImpl$2.run(BundleContextImpl.java:994) at java.security.AccessController.doPrivileged(Native Method) at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:988) at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:969) at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:321) at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:266) at org.eclipse.core.runtime.adaptor.EclipseClassLoader.findLocalClass(EclipseClassLoader.java:116) at org.eclipse.osgi.framework.internal.core.BundleLoader.findLocalClass(BundleLoader.java:337) at org.eclipse.osgi.framework.internal.core.SingleSourcePackage.loadClass(SingleSourcePackage.java:37) at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:386) at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:350) at org.eclipse.osgi.framework.adaptor.core.AbstractClassLoader.loadClass(AbstractClassLoader.java:78) at java.lang.ClassLoader.loadClass(ClassLoader.java:235) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302) at java.lang.Class.getDeclaredConstructors0(Native Method) at java.lang.Class.privateGetDeclaredConstructors(Class.java:1610) at java.lang.Class.getConstructor0(Class.java:1922) at java.lang.Class.getConstructor(Class.java:1019) at org.eclipse.core.internal.plugins.PluginDescriptor.internalDoPluginActivation(PluginDescriptor.java:415) at org.eclipse.core.internal.plugins.PluginDescriptor.doPluginActivation(PluginDescriptor.java:371) at org.eclipse.core.internal.plugins.PluginDescriptor.getPlugin(PluginDescriptor.java:340) at org.eclipse.core.internal.compatibility.PluginActivator.start(PluginActivator.java:28) at org.eclipse.osgi.framework.internal.core.BundleContextImpl$2.run(BundleContextImpl.java:994) at java.security.AccessController.doPrivileged(Native Method) at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:988) at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:969) at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:321) at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:266) at org.eclipse.core.runtime.adaptor.EclipseClassLoader.findLocalClass(EclipseClassLoader.java:116) at org.eclipse.osgi.framework.internal.core.BundleLoader.findLocalClass(BundleLoader.java:337) at org.eclipse.osgi.framework.internal.core.SingleSourcePackage.loadClass(SingleSourcePackage.java:37) at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:386) at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:350) at org.eclipse.osgi.framework.adaptor.core.AbstractClassLoader.loadClass(AbstractClassLoader.java:78) at java.lang.ClassLoader.loadClass(ClassLoader.java:235) at org.eclipse.osgi.framework.internal.core.BundleLoader.loadClass(BundleLoader.java:275) at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:227) at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractBundle.java:1259) at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:152) at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:142) at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:129) at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:48) at org.eclipse.ui.internal.WorkbenchPlugin$1.run(WorkbenchPlugin.java:240) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:69) at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlugin.java:236) at org.eclipse.ui.internal.decorators.FullDecoratorDefinition$1.run(FullDecoratorDefinition.java:63) at org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatform.java:1044) at org.eclipse.core.runtime.Platform.run(Platform.java:783) at org.eclipse.ui.internal.decorators.FullDecoratorDefinition.internalGetDecorator(FullDecoratorDefinition.java:58) at org.eclipse.ui.internal.decorators.FullDecoratorDefinition.decorateText(FullDecoratorDefinition.java:128) at org.eclipse.ui.internal.decorators.FullTextDecoratorRunnable.run(FullTextDecoratorRunnable.java:26) at org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatform.java:1044) at org.eclipse.core.runtime.Platform.run(Platform.java:783) at org.eclipse.ui.internal.decorators.DecoratorManager.safeDecorateText(DecoratorManager.java:343) at org.eclipse.ui.internal.decorators.DecoratorManager.decorateText(DecoratorManager.java:310) at org.eclipse.jface.viewers.DecoratingLabelProvider.getText(DecoratingLabelProvider.java:120) at org.eclipse.jface.viewers.DecoratingLabelProvider.updateLabel(DecoratingLabelProvider.java:208) at org.eclipse.jface.viewers.StructuredViewer.buildLabel(StructuredViewer.java:1855) at org.eclipse.jface.viewers.TreeViewer.doUpdateItem(TreeViewer.java:228) at org.eclipse.jface.viewers.AbstractTreeViewer$UpdateItemSafeRunnable.run(AbstractTreeViewer.java:85) at org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatform.java:1044) at org.eclipse.core.runtime.Platform.run(Platform.java:783) at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:44) at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:148) at org.eclipse.jface.viewers.AbstractTreeViewer.doUpdateItem(AbstractTreeViewer.java:621) at org.eclipse.jface.viewers.StructuredViewer$UpdateItemSafeRunnable.run(StructuredViewer.java:434) at org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatform.java:1044) at org.eclipse.core.runtime.Platform.run(Platform.java:783) at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:44) at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:148) at org.eclipse.jface.viewers.StructuredViewer.updateItem(StructuredViewer.java:1763) at org.eclipse.jface.viewers.AbstractTreeViewer.createTreeItem(AbstractTreeViewer.java:535) at org.eclipse.jface.viewers.AbstractTreeViewer$1.run(AbstractTreeViewer.java:514) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:69) at org.eclipse.jface.viewers.AbstractTreeViewer.createChildren(AbstractTreeViewer.java:494) at org.eclipse.jface.viewers.AbstractTreeViewer$5.run(AbstractTreeViewer.java:983) at org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1201) at org.eclipse.jface.viewers.AbstractTreeViewer.inputChanged(AbstractTreeViewer.java:973) at org.eclipse.jface.viewers.ContentViewer.setInput(ContentViewer.java:248) at org.eclipse.jface.viewers.StructuredViewer.setInput(StructuredViewer.java:1417) at org.eclipse.ui.views.navigator.ResourceNavigator.createPartControl(ResourceNavigator.java:266) at org.eclipse.ui.internal.ViewReference.createPartHelper(ViewReference.java:305) at org.eclipse.ui.internal.ViewReference.createPart(ViewReference.java:180) at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:552) at org.eclipse.ui.internal.WorkbenchPage$ActivationList.setActive(WorkbenchPage.java:3526) at org.eclipse.ui.internal.WorkbenchPage.restoreState(WorkbenchPage.java:2618) at org.eclipse.ui.internal.WorkbenchWindow.restoreState(WorkbenchWindow.java:1819) at org.eclipse.ui.internal.Workbench.doRestoreState(Workbench.java:2566) at org.eclipse.ui.internal.Workbench.access$14(Workbench.java:2515) at org.eclipse.ui.internal.Workbench$19.run(Workbench.java:1514) at org.eclipse.ui.internal.Workbench$16.run(Workbench.java:1263) at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:346) at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:291) at org.eclipse.jface.dialogs.ProgressMonitorDialog.run(ProgressMonitorDialog.java:447) at org.eclipse.ui.internal.Workbench.runStartupWithProgress(Workbench.java:1258) at org.eclipse.ui.internal.Workbench.restoreState(Workbench.java:1512) at org.eclipse.ui.internal.Workbench.access$12(Workbench.java:1491) at org.eclipse.ui.internal.Workbench$17.run(Workbench.java:1374) at org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatform.java:1044) at org.eclipse.core.runtime.Platform.run(Platform.java:783) at org.eclipse.ui.internal.Workbench.restoreState(Workbench.java:1318) at org.eclipse.ui.internal.WorkbenchConfigurer.restoreState(WorkbenchConfigurer.java:183) at org.eclipse.ui.application.WorkbenchAdvisor.openWindows(WorkbenchAdvisor.java:700) at org.eclipse.ui.internal.Workbench.init(Workbench.java:1034) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1636) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:367) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:143) at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:103) at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:226) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:376) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:163) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at org.eclipse.core.launcher.Main.invokeFramework(Main.java:334) at org.eclipse.core.launcher.Main.basicRun(Main.java:278) at org.eclipse.core.launcher.Main.run(Main.java:973) at org.eclipse.core.launcher.Main.main(Main.java:948)
Can you please attach your <workspace>\.metadata\.plugins\org.eclipse.jdt.core\variablesAndContainers.dat file to this bug ?
Created attachment 26956 [details] variablesAndContainers.dat file
See also bug 109058.
I was able to get the workspace up by deleting the variablesAndContainers.dat file. Not sure what impact that has though.
(In reply to comment #4) > I was able to get the workspace up by deleting the variablesAndContainers.dat > file. Not sure what impact that has though. > The only impact would be a slower startup the first time. variablesAndContainers.dat is just a cache of the values of the previous session. If missing, these would be computed on startup. First investigation shows that these file was corrupted (or not written entirely). I'll try to find out why and add some protection so that a corrupted file is treated as missing.
Bytes from poistion 2049 to 2157 were replaced with 0 (zero). Looking at the code that write these bytes, I don't see anything wrong. What VM and JCL are you using ? Could it be a bug in this VM+JCL ?
(In reply to comment #6) > Bytes from poistion 2049 to 2157 were replaced with 0 (zero). > I meant bytes from position 2048 to 2157 (inclusive) were replaced with 0 (zero).
I'm using the Sun 1.4.2_01 VM, which has been very stable for me for a long time.
+1 for adding fault-tolerance in this area for 3.1.1
Added protection in JavaModelManager#loadVariablesAndContainers() so that RuntimeExceptions thrown while reading the file are caught and logged, but they are not rethrown. JDT Core can now start ok in the presence of a corrupt variablesAndContainers.dat file. This is released in both HEAD and R3_1_maintenance branch.
Verified for 3.1.1 using M20050923-1430 by checking the code.
