java 的 DO_NOTHING_ON_CLOSE

Question

我有这段代码:

public class Main_class {
    public static void main(String[] args) {

        JFrame first = new JFrame();
        first.setTitle("Hello");
        first.setSize(300, 100);
        first.setLocation(300, 100);
        first.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
        first.setVisible(true);
    }
}

我收到原始框架，我的问题是我应该如何在没有窗口管理器任务的情况下关闭窗口，在此先感谢

Answer 1

如果你想关闭它，我会实现一个关闭框架的监听器:

public static void main(String[] args) {

    final JFrame first = new JFrame();
    first.setTitle("Hello");
    first.setSize(300, 100);
    first.setLocation(300, 100);

    first.addWindowListener(new WindowAdapter() {
        @Override
        public void windowClosing(WindowEvent e) {

            // do other stuff....

            first.setVisible(false);
            first.dispose();
        }
    });

    first.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
    first.setVisible(true);
}