Bug 62612 NPE in EclipsePreferences.internalGet(...)
I200405171219 + ZRH smoke plugin-export 20040518_1115 After start and shutdown of the Buildmeister runtime I found the following exception. It looks like getTextPreferenceKey() in AbstractAnnotationHover#getHoverInfo() at line 83 returned null. java.lang.NullPointerException at org.eclipse.core.internal.preferences.EclipsePreferences.internalGet(EclipsePreferences.java:479) at org.eclipse.core.internal.preferences.EclipsePreferences.get(EclipsePreferences.java:349) at org.eclipse.core.internal.preferences.PreferenceForwarder.contains(PreferenceForwarder.java:181) at org.eclipse.ui.plugin.AbstractUIPlugin$CompatibilityPreferenceStore.contains(AbstractUIPlugin.java:277) at org.eclipse.ui.texteditor.ChainedPreferenceStore.getVisibleStore(ChainedPreferenceStore.java:525) at org.eclipse.ui.texteditor.ChainedPreferenceStore.getBoolean(ChainedPreferenceStore.java:166) at org.eclipse.jdt.internal.ui.text.java.hover.AbstractAnnotationHover.getHoverInfo(AbstractAnnotationHover.java:83) at org.eclipse.jdt.internal.ui.text.java.hover.BestMatchHover.getHoverInfo(BestMatchHover.java:102) at org.eclipse.jdt.internal.ui.text.java.hover.JavaEditorTextHoverProxy.getHoverInfo(JavaEditorTextHoverProxy.java:69) at org.eclipse.jface.text.TextViewerHoverManager$4.run(TextViewerHoverManager.java:161)
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaEditor.java
((ITextViewerExtension4)sourceViewer).removeTextPresentationListener(this);
		}
				
		/*
		 * @see IPropertyChangeListener#propertyChange(PropertyChangeEvent)
		 */
		public void propertyChange(PropertyChangeEvent event) {
			if (event.getProperty().equals(JavaEditor.LINK_COLOR)) {
				ISourceViewer viewer= getSourceViewer();
				if (viewer != null)	
					updateColor(viewer);
			} else if (event.getProperty().equals(BROWSER_LIKE_LINKS_KEY_MODIFIER)) {
				updateKeyModifierMask();
			}
		}
		private void updateColor(ISourceViewer viewer) {
			if (fColor != null)
				fColor.dispose();
	
			StyledText text= viewer.getTextWidget();
			if (text == null || text.isDisposed())
				return;
			Display display= text.getDisplay();
			fColor= createColor(getPreferenceStore(), JavaEditor.LINK_COLOR, display);
		}
		/**
		 * Creates a color from the information stored in the given preference store.
		 * 
		 * @param store the preference store