Java事件基础

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);
    }
    

}