public void propertyChange(PropertyChangeEvent e) { boolean isDisposed = (Boolean) e.getNewValue(); if (isDisposed != true) { if (log.isLoggable(PlatformLogger.Level.FINE)) { log.fine(" Assertion (newValue != true) failed for AppContext.GUI_DISPOSED "); } } AppContext appContext = AppContext.getAppContext(); synchronized (appContext) { appContext.remove(ACTIVE_WINDOWS_KEY); appContext.removePropertyChangeListener(AppContext.GUI_DISPOSED, this); KeyboardFocusManager kfm = KeyboardFocusManager.getCurrentKeyboardFocusManager(); kfm.removePropertyChangeListener("activeWindow", activeWindowListener); } }