package cn.Douzi.Event;import javax.swing.*;import java.awt.*;import java.awt.event.*;public class Demo_moreListener extends JFrame {    Mypanel mp = null;        public Demo_moreListener() {        // TODO Auto-generated constructor stub        mp = new Mypanel();                this.add(mp);        //注册监听        this.addMouseListener(mp);        this.addKeyListener(mp);        this.addMouseMotionListener(mp);        this.addWindowListener(mp);                this.setSize(400, 300);                this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);            }        public static void main(String[] args) {                Demo_moreListener test = new Demo_moreListener();        test.setVisible(true);    }}//1.让Mypanel知道鼠标按下的消息，并且知道点击的位置(x,y)//2.让Mypanel知道哪个键按下//3.让MyPanel知道鼠标移动,拖拽//4.让MyPanel知道窗口的变化：变化，最小化，最大化class Mypanel extends JPanel implements WindowListener, MouseListener, KeyListener, MouseMotionListener {            @Override    public void windowOpened(WindowEvent e) {        // TODO Auto-generated method stub            }    //窗口正在关闭    @Override    public void windowClosing(WindowEvent e) {        // TODO Auto-generated method stub        System.out.println("正在关闭........");    }    //窗口关闭    @Override    public void windowClosed(WindowEvent e) {        // TODO Auto-generated method stub            }    @Override    public void windowIconified(WindowEvent e) {        // TODO Auto-generated method stub            }    //窗口最小化    @Override    public void windowDeiconified(WindowEvent e) {        // TODO Auto-generated method stub    }    //窗口激活    @Override    public void windowActivated(WindowEvent e) {        // TODO Auto-generated method stub        System.out.println("窗口激活");    }    @Override    public void windowDeactivated(WindowEvent e) {        // TODO Auto-generated method stub        System.out.println("窗口最小化");    }    //鼠标移动    @Override    public void mouseDragged(MouseEvent e) {        // TODO Auto-generated method stub            }    @Override    public void mouseMoved(MouseEvent e) {        // TODO Auto-generated method stub        System.out.println("鼠标移动");    }    //键事件    //键输入q  w  F1    @Override    public void keyTyped(KeyEvent e) {        // TODO Auto-generated method stub                    }    //键按下，未松开    @Override    public void keyPressed(KeyEvent e) {        // TODO Auto-generated method stub        System.out.println(e.getKeyChar() + "键被按下");    }    //键松开    @Override    public void keyReleased(KeyEvent e) {        // TODO Auto-generated method stub            }    //鼠标点击    @Override    public void mouseClicked(MouseEvent e) {        // TODO Auto-generated method stub        System.out.println("鼠标点击了 x = " + e.getX() + "y = " + e.getY());    }        //鼠标按下，但是还没有松开事件    @Override    public void mousePressed(MouseEvent e) {        // TODO Auto-generated method stub            }    //鼠标按下，然后 松开 的事件    @Override    public void mouseReleased(MouseEvent e) {        // TODO Auto-generated method stub            }    //鼠标移动到Mypanel    @Override    public void mouseEntered(MouseEvent e) {        // TODO Auto-generated method stub        System.out.println("鼠标来");            }    //鼠标离开Mypanel    @Override    public void mouseExited(MouseEvent e) {        // TODO Auto-generated method stub        System.out.println("鼠标走");    }    @Override    public void paint(Graphics g) {        // TODO Auto-generated method stub        super.paint(g);    }    }