Object[] changeListeners = changeListenerList.getListenerList();
Object[] changeListeners = listenerList.getListenerList();
  private void fireStateChanged()  {    Object[] changeListeners = changeListenerList.getListenerList();    if (changeEvent == null)      changeEvent = new ChangeEvent(this);    for (int i = changeListeners.length - 2; i >= 0; i -= 2)      {	if (changeListeners[i] == ChangeListener.class)	  ((ChangeListener) changeListeners[i + 1]).stateChanged(changeEvent);      }  }