Bug 29696 JavaMarkerAnnotation.initialize() can be called in non UI thread.
Build I20020315 Refactoring uses documents and annotation models to actual perform the textual changes. Since refactoring operations can be executed in a non UI thread (e.g. when executed as an operation) the JavaMarkerAnnotation.initialize() method may be called in a non UI thread resulting in an assertion failure due to image creation. Caused by: org.eclipse.jface.util.Assert$AssertionFailedException: null argument; at org.eclipse.jface.util.Assert.isNotNull(Assert.java:133) at org.eclipse.jface.util.Assert.isNotNull(Assert.java:110) at org.eclipse.jface.resource.ImageRegistry.<init> (ImageRegistry.java:51) at org.eclipse.jdt.internal.ui.JavaPluginImages.getImageRegistry (JavaPluginImages.java:341) at org.eclipse.jdt.internal.ui.JavaPluginImages.get (JavaPluginImages.java:317) at org.eclipse.jdt.internal.ui.javaeditor.JavaMarkerAnnotation.initialize (JavaMarkerAnnotation.java:111) at org.eclipse.ui.texteditor.MarkerAnnotation.<init> (MarkerAnnotation.java:111) at org.eclipse.jdt.internal.ui.javaeditor.JavaMarkerAnnotation.<init> (JavaMarkerAnnotation.java:53) at org.eclipse.jdt.internal.ui.javaeditor.CompilationUnitDocumentProvider$Compilati onUnitAnnotationModel.createMarkerAnnotation (CompilationUnitDocumentProvider.java:381) at org.eclipse.ui.texteditor.AbstractMarkerAnnotationModel.addMarkerAnnotation (AbstractMarkerAnnotationModel.java:215) at org.eclipse.ui.texteditor.AbstractMarkerAnnotationModel.catchupWithMarkers (AbstractMarkerAnnotationModel.java:394) at org.eclipse.ui.texteditor.AbstractMarkerAnnotationModel.connected (AbstractMarkerAnnotationModel.java:228) at org.eclipse.jface.text.source.AnnotationModel.connect (AnnotationModel.java:139) at org.eclipse.jdt.internal.corext.textmanipulation.TextBufferFactory.acquire (TextBufferFactory.java:88) at org.eclipse.jdt.internal.corext.textmanipulation.TextBuffer.acquire (TextBuffer.java:371) at org.eclipse.jdt.internal.corext.codemanipulation.ImportsStructure.aquireTextBuff er(ImportsStructure.java:538) at org.eclipse.jdt.internal.corext.codemanipulation.ImportsStructure.<init> (ImportsStructure.java:85) at org.eclipse.jdt.internal.corext.codemanipulation.ImportEdit.<init> (ImportEdit.java:33) at org.eclipse.jdt.internal.corext.refactoring.reorg.MoveCuUpdateCreator.getImportE dit(MoveCuUpdateCreator.java:217) at org.eclipse.jdt.internal.corext.refactoring.reorg.MoveCuUpdateCreator.addImport (MoveCuUpdateCreator.java:208) at org.eclipse.jdt.internal.corext.refactoring.reorg.MoveCuUpdateCreator.addImports ToDestinationPackage(MoveCuUpdateCreator.java:199) at org.eclipse.jdt.internal.corext.refactoring.reorg.MoveCuUpdateCreator.createChan geManager(MoveCuUpdateCreator.java:89) at org.eclipse.jdt.internal.corext.refactoring.reorg.MoveRefactoring.createChangeMa nager(MoveRefactoring.java:475) at org.eclipse.jdt.internal.corext.refactoring.reorg.MoveRefactoring.checkInput (MoveRefactoring.java:158) at org.eclipse.jdt.internal.ui.refactoring.CheckConditionsOperation.run (CheckConditionsOperation.java:59) at org.eclipse.jdt.internal.ui.refactoring.CreateChangeOperation.run (CreateChangeOperation.java:94) at org.eclipse.jface.operation.ModalContext$ModalContextThread.run (ModalContext.java:95)
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaMarkerAnnotation.java
return super.getImage(display);
		int newImageType= NO_IMAGE;
		if (hasOverlay())
			newImageType= OVERLAY_IMAGE;
		else if (isRelevant()) {
			if (mustShowQuickFixIcon()) {
				if (fType == AnnotationType.ERROR)
					newImageType= QUICKFIX_ERROR_IMAGE;
				else
					newImageType= QUICKFIX_IMAGE; 
			} else
				newImageType= ORIGINAL_MARKER_IMAGE; 
		} else
			newImageType= GRAY_IMAGE;
		if (fImageType == newImageType && newImageType != OVERLAY_IMAGE)
			
			return super.getImage(display);
		Image newImage= null;
		switch (newImageType) {
			case ORIGINAL_MARKER_IMAGE:
				newImage= null;
				break;
			case OVERLAY_IMAGE:
				newImage= fOverlay.getImage(display);
				break;
			case QUICKFIX_IMAGE:
				newImage= getQuickFixImage();
				break;
			case QUICKFIX_ERROR_IMAGE:
				newImage= getQuickFixErrorImage();