6 
    mainFrame.addWindowListener(new WindowListener() {

        @Override
        public void windowClosing(WindowEvent e) {
            if (JOptionPane.showConfirmDialog(mainFrame, "Are you sure you want to quit?", "Confirm exit.", JOptionPane.OK_OPTION, 0, new ImageIcon("")) != 0) {
                return;
            }
            System.exit(-1);
        }

        @Override 
        public void windowOpened(WindowEvent e) {}

        @Override 
        public void windowClosed(WindowEvent e) {}

        @Override 
        public void windowIconified(WindowEvent e) {}

        @Override 
        public void windowDeiconified(WindowEvent e) {}

        @Override 
        public void windowActivated(WindowEvent e) {}

        @Override 
        public void windowDeactivated(WindowEvent e) {}

    });

有我的代码，是否有可能因为我只使用 windowClosing 方法来删​​除我的情况下的所有其他方法，无用的方法，所以它占用的空间更少？

例子

    mainFrame.addWindowListener(new WindowListener() {

        @Override
        public void windowClosing(WindowEvent e) {
            if (JOptionPane.showConfirmDialog(mainFrame, "Are you sure you want to quit?", "Confirm exit.", JOptionPane.OK_OPTION, 0, new ImageIcon("")) != 0) {
                return;
            }
            System.exit(-1);
        }

    });

是否可以？

4

1 回答 1

12

WindowListener调用的默认实现WindowAdapter允许您覆盖您真正想要使用的方法

于 2012-11-03T08:46:30.357 回答