窗口监听事件

package com.wang.gui;

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);
        setBounds(100,100,200,200);
        setVisible(true);
//        addWindowListener(new MyWindowListener());
        this.addWindowListener(
                //匿名内部类
                new WindowAdapter() {
                    @Override
                    public void windowClosing(WindowEvent e) {
                        super.windowClosing(e);
                    }
                }
        );
    }
}