Bug 98327 [misc] File not saved on disk after "resave" editor context
N20060604-0010 - create project, package, A.java - open A.java in editor - go to OS explorer - delete A.java on disk - go back to workbench and activate editor observe: you get a dialog asking you whether you want to save the content - say yes observe: the dialog claims that the file exists. Strange, since I just deleted it. Say yes for override observe: the file doesn't end up on disk. You get an editor that the file doesn't exist.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/CompilationUnitDocumentProvider.java
/**
		 * Bundle of all required informations to allow working copy management.
		 */
		static protected class CompilationUnitInfo extends FileInfo {
			public ICompilationUnit fCopy;
		}
		/**
		 * Annotation representing an <code>IProblem</code>.
		 */
		static public class ProblemAnnotation extends Annotation implements IJavaAnnotation, IAnnotationPresentation {
			public static final String SPELLING_ANNOTATION_TYPE= "org.eclipse.ui.workbench.texteditor.spelling"; 
			
			/**
			 * The layer in which task problem annotations are located.
			 */
			private static final int TASK_LAYER;
			/**
			 * The layer in which info problem annotations are located.