Description Juergen Purtz 2004-09-17 10:21:04 EDT

When changing any value of 

Window>Preference>Java>Editor>Hovers

I receive the error message: 'Error notifying a preference change listener.
Check the log for details.' The log contains:

!ENTRY org.eclipse.core.runtime 4 2 Sep 17, 2004 16:01:14.818
!MESSAGE Problems occurred when invoking code from plug-in:
"org.eclipse.core.runtime".
!STACK 0
java.lang.NullPointerException
	at
org.eclipse.ui.texteditor.ConfigurationElementSorter$ConfigurationElementComparator.initialize(ConfigurationElementSorter.java:151)
	at
org.eclipse.ui.texteditor.ConfigurationElementSorter$ConfigurationElementComparator.<init>(ConfigurationElementSorter.java:73)
	at
org.eclipse.ui.texteditor.ConfigurationElementSorter.sort(ConfigurationElementSorter.java:51)
	at
org.eclipse.jdt.internal.ui.JavaPlugin.getJavaEditorTextHoverDescriptors(JavaPlugin.java:589)
	at
org.eclipse.jdt.ui.text.JavaSourceViewerConfiguration.getConfiguredTextHoverStateMasks(JavaSourceViewerConfiguration.java:528)
	at
org.eclipse.jdt.internal.ui.javaeditor.JavaEditor.updateHoverBehavior(JavaEditor.java:3274)
	at
org.eclipse.jdt.internal.ui.javaeditor.JavaEditor.handlePreferenceStoreChanged(JavaEditor.java:3000)
	at
org.eclipse.jdt.internal.ui.javaeditor.CompilationUnitEditor.handlePreferenceStoreChanged(CompilationUnitEditor.java:1707)
	at
org.eclipse.ui.texteditor.AbstractTextEditor$PropertyChangeListener.propertyChange(AbstractTextEditor.java:540)
	at
org.eclipse.ui.texteditor.ChainedPreferenceStore.firePropertyChangeEvent(ChainedPreferenceStore.java:162)
	at
org.eclipse.ui.texteditor.ChainedPreferenceStore.handlePropertyChangeEvent(ChainedPreferenceStore.java:431)
	at
org.eclipse.ui.texteditor.ChainedPreferenceStore.access$0(ChainedPreferenceStore.java:406)
	at
org.eclipse.ui.texteditor.ChainedPreferenceStore$PropertyChangeListener.propertyChange(ChainedPreferenceStore.java:68)
	at org.eclipse.ui.plugin.AbstractUIPlugin$2.run(AbstractUIPlugin.java:267)
	at
org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatform.java:615)
	at org.eclipse.core.runtime.Platform.run(Platform.java:747)
	at
org.eclipse.ui.plugin.AbstractUIPlugin$CompatibilityPreferenceStore.firePropertyChangeEvent(AbstractUIPlugin.java:265)
	at
org.eclipse.ui.plugin.AbstractUIPlugin$1.propertyChange(AbstractUIPlugin.java:205)
	at
org.eclipse.core.internal.preferences.PreferenceForwarder.preferenceChange(PreferenceForwarder.java:115)
	at
org.eclipse.core.internal.preferences.EclipsePreferences$4.run(EclipsePreferences.java:743)
	at
org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatform.java:615)
	at org.eclipse.core.runtime.Platform.run(Platform.java:747)
	at
org.eclipse.core.internal.preferences.EclipsePreferences.preferenceChanged(EclipsePreferences.java:746)
	at
org.eclipse.core.internal.preferences.EclipsePreferences.put(EclipsePreferences.java:757)
	at
org.eclipse.core.internal.preferences.PreferenceForwarder.setValue(PreferenceForwarder.java:604)
	at
org.eclipse.ui.plugin.AbstractUIPlugin$CompatibilityPreferenceStore.setValue(AbstractUIPlugin.java:474)
	at
org.eclipse.jdt.internal.ui.preferences.OverlayPreferenceStore.propagateProperty(OverlayPreferenceStore.java:138)
	at
org.eclipse.jdt.internal.ui.preferences.OverlayPreferenceStore.propagate(OverlayPreferenceStore.java:145)
	at
org.eclipse.jdt.internal.ui.preferences.JavaEditorPreferencePage.performOk(JavaEditorPreferencePage.java:1313)
	at
org.eclipse.jface.preference.PreferencePage.performApply(PreferencePage.java:409)
	at
org.eclipse.jface.preference.PreferencePage$2.widgetSelected(PreferencePage.java:272)
	at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:89)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:82)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:796)
	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:2772)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2431)
	at org.eclipse.jface.window.Window.runEventLoop(Window.java:668)
	at org.eclipse.jface.window.Window.open(Window.java:648)
	at org.eclipse.ui.internal.OpenPreferencesAction.run(OpenPreferencesAction.java:72)
	at org.eclipse.jface.action.Action.runWithEvent(Action.java:881)
	at
org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:915)
	at
org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:866)
	at
org.eclipse.jface.action.ActionContributionItem$7.handleEvent(ActionContributionItem.java:785)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:82)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:796)
	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:2772)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2431)
	at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1377)
	at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1348)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:254)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:141)
	at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:96)
	at
org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:335)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:273)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:129)
	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.basicRun(Main.java:183)
	at org.eclipse.core.launcher.Main.run(Main.java:644)
	at org.eclipse.core.launcher.Main.main(Main.java:628)