窗口的监听事件

package cn.rushangw.lesson03;

import java.awt.*;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

public class TestWindow {
    public static void main(String[] args) {
        new WindowFrame();
    }
}

class WindowFrame extends Frame{
    public WindowFrame(){
        setBackground(Color.BLUE);
        setVisible(true);
        setBounds(500,500,300,400);
        //addWindowListener(new MyWindowListener());
        //匿名内部类
        addWindowListener(new WindowAdapter() {
            //关闭窗口
            @Override
            public void windowClosing(WindowEvent e) {
                System.out.println("你点击了关闭");
                System.exit(0);
            }
            //激活窗口
            @Override
            public void windowActivated(WindowEvent e) {
                WindowFrame source = (WindowFrame) e.getSource();
                source.setTitle("被激活了");
                System.out.println("窗口被激活");
            }

        });
    }
}

窗口的监听事件

原文：https://www.cnblogs.com/nigustudent/p/14801732.html