Bug 9571 [Java Browsing] Views not updated when folder of package is deleted
1) Select a method in a type, i.e. all viewers are populated, editor is visible 2) Deactivate linking between active editor and navigator in workbench preferences 3) Deactivate auto build 3) Prespective>Show View>Navigator 4) Pin Navigator 5) Select the folder containing the file of the previously selected method 6) Context Menu>Delete -> Editor closed -> Package, type, and method still visible in their views -> Selecting package possible and results in flushing Types View
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/browsing/JavaElementContentProvider.java
});
	}
	private void postRemove(final Object element) {
		postRemove(new Object[] {element});
	}
	private void postRemove(final Object[] elements) {
		postRunnable(new Runnable() {
			public void run() {
				Control ctrl= fViewer.getControl();
				if (ctrl != null && !ctrl.isDisposed()) {
					ctrl.setRedraw(false);
					if (fViewer instanceof AbstractTreeViewer)
						((AbstractTreeViewer)fViewer).remove(elements);
					else if (fViewer instanceof ListViewer)
						((ListViewer)fViewer).remove(elements);
					else if (fViewer instanceof TableViewer)
						((TableViewer)fViewer).remove(elements);
					ctrl.setRedraw(true);
				}
			}
		});
	}
	private void postRunnable(final Runnable r) {
		Control ctrl= fViewer.getControl();
		if (ctrl != null && !ctrl.isDisposed()) {
			ctrl.getDisplay().asyncExec(r); 
		}
	}
}