窗口监听事件

鼠标监听事件

package com.zhang.Study.窗口监听事件;

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

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

}
 class  WindowFrame extends Frame{
    public WindowFrame(){
        setBackground(Color.RED);
        setBounds(100,100,200,200);
        setVisible(true);
        addWindowListener(new WindowFrameListener());
    }
    class  WindowFrameListener extends WindowAdapter {
        //激活窗口
        @Override
        public void windowActivated(WindowEvent e) {
            //获取窗口对象
           WindowFrame source = (WindowFrame)(e.getSource());
           source.setTitle("被激活了");
            System.out.println("is Acrivted");
        }
        //关闭窗口
        @Override
        public void windowClosing(WindowEvent e) {

            //这里把窗口显示为不可见，但是并没有关闭窗口
        setVisible(false);//内部类可以调用外部类的属性和方法
      System.exit(0);//真正关闭窗口操作


        }
    }
 }