If a PropertyChangeListener or done() method throw an exception, all the accumulated notifications are lost.

Consider the following scenario: SwingWorker has a PropertyChangeListener and overrides the done method, its doInBackground method quickly returns the result.

The expected order is:
1. propertyChange("STARTED state")
2. done() method called
3. propertyChange("DONE state")

If the handler for STARTED state throws an exception, neither done() method is called nor DONE state notification is delivered.