用户关闭（Xs out）JFrame后立即执行操作

问题描述

基本上它是带有GUI的客户端程序，所以我想在用户关闭客户端程序时关闭套接字。是否有监听器或某些东西可以让我这样做？

Basically it's a client program with a GUI so I want to close the sockets when the user closes the client program. Is there is Listener or something that will allow me to do this?

推荐答案

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.addWindowListener(new WindowAdapter() {

    @Override
    public void windowClosing(WindowEvent e) {
        // do stuff
    }
});

请注意，默认关闭操作时，只会调用 在框架通过（x）按钮关闭之前设置为 EXIT_ON_CLOSE 。默认值为 HIDE_ON_CLOSE ，从技术上讲，它不会关闭窗口，因此不会通知监听器。

Note that this will only be called when the default close operation has been set to EXIT_ON_CLOSE before the frame is closed via the (x) button. The default is HIDE_ON_CLOSE which technically does not close the window, therefore the listener would not be notified.

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