private int countNonExternalizedStrings(ICompilationUnit cu){
private int countNonExternalizedStrings(ICompilationUnit cu) throws CoreException {
	private int countNonExternalizedStrings(ICompilationUnit cu){		try{			NLSLine[] lines= NLSScanner.scan(cu);			int result= 0;			for (int i= 0; i < lines.length; i++) {				result += countNonExternalizedStrings(lines[i]);			}			return result;		}catch(JavaModelException e) {			ExceptionHandler.handle(e, 				getDialogTitle(),				ActionMessages.FindStringsToExternalizeAction_error_message); 			return 0;		}catch(InvalidInputException iie) {			JavaPlugin.log(iie);			return 0;		}		}