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);
}

}