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
* Install Semantic Highlighting.
	 * 
	 * @since 3.0
	 */
	private void installSemanticHighlighting() {
		if (fSemanticManager == null) {
			fSemanticManager= new SemanticHighlightingManager();
			JavaPresentationReconciler backgroundPresentationReconciler= (JavaPresentationReconciler) getSourceViewerConfiguration().getPresentationReconciler(getSourceViewer());
			fSemanticManager.install(this, (JavaSourceViewer) getSourceViewer(), JavaPlugin.getDefault().getJavaTextTools().getColorManager(), getPreferenceStore(), backgroundPresentationReconciler);
		}
	}
	
	/**
	 * Uninstall Semantic Highlighting.
	 * 
	 * @since 3.0
	 */
	private void uninstallSemanticHighlighting() {
		if (fSemanticManager != null) {
			fSemanticManager.uninstall();
			fSemanticManager= null;
		}
	}
	
	/**
	 * Returns the Java element wrapped by this editors input.
	 * 
	 * @return the Java element wrapped by this editors input.
	 * @since 3.0
	 */