*
     * @return all of the <code>PropertyChangeListener</code>s added or an empty
     *         array if no listeners have been added
     * @since 1.4
     */
    public synchronized PropertyChangeListener[] getPropertyChangeListeners() {
        if (changeSupport == null) {
            return new PropertyChangeListener[0];
        }
        return changeSupport.getPropertyChangeListeners();
    }


    /**
     * Clones the abstract action. This gives the clone
     * its own copy of the key/value list,
     * which is not handled for you by <code>Object.clone()</code>.
     **/

    protected Object clone() throws CloneNotSupportedException {
	AbstractAction newAction = (AbstractAction)super.clone();
	synchronized(this) {
	    if (arrayTable != null) {
		newAction.arrayTable = (ArrayTable)arrayTable.clone();
	    }
	}
	return newAction;
    }

    private void writeObject(ObjectOutputStream s) throws IOException {
	// Store the default fields
        s.defaultWriteObject();

        // And the keys
        ArrayTable.writeArrayTable(s, arrayTable);
    }

    private void readObject(ObjectInputStream s) throws ClassNotFoundException,
	IOException {
        s.defaultReadObject();
	for (int counter = s.readInt() - 1; counter >= 0; counter--) {
	    putValue((String)s.readObject(), s.readObject());
	}
    }
}