JList元素上的双击事件

String[] items = {"A", "B", "C", "D"};JList list = new JList(items);list.addMouseListener(new MouseAdapter() {    public void mouseClicked(MouseEvent evt) {        JList list = (JList)evt.getSource();        if (evt.getClickCount() == 2) { // Double-click detected int index = list.locationToIndex(evt.getPoint());        } else if (evt.getClickCount() == 3) { // Triple-click detected int index = list.locationToIndex(evt.getPoint());        }    }});