Java事件基礎

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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);        //註冊監聽        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.讓Mypanel知道滑鼠按下的訊息，並且知道點擊的位置(x,y)//2.讓Mypanel知道哪個鍵按下//3.讓MyPanel知道滑鼠移動,拖拽//4.讓MyPanel知道視窗的變化：變化，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            }    //視窗正在關閉    @Override    public void windowClosing(WindowEvent e) {        // TODO Auto-generated method stub        System.out.println("正在關閉........");    }    //視窗關閉    @Override    public void windowClosed(WindowEvent e) {        // TODO Auto-generated method stub            }    @Override    public void windowIconified(WindowEvent e) {        // TODO Auto-generated method stub            }    //視窗最小化    @Override    public void windowDeiconified(WindowEvent e) {        // TODO Auto-generated method stub    }    //視窗啟用    @Override    public void windowActivated(WindowEvent e) {        // TODO Auto-generated method stub        System.out.println("視窗啟用");    }    @Override    public void windowDeactivated(WindowEvent e) {        // TODO Auto-generated method stub        System.out.println("視窗最小化");    }    //滑鼠移動    @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("滑鼠移動");    }    //鍵事件    //鍵輸入q  w  F1    @Override    public void keyTyped(KeyEvent e) {        // TODO Auto-generated method stub                    }    //鍵按下，未鬆開    @Override    public void keyPressed(KeyEvent e) {        // TODO Auto-generated method stub        System.out.println(e.getKeyChar() + "鍵被按下");    }    //鍵鬆開    @Override    public void keyReleased(KeyEvent e) {        // TODO Auto-generated method stub            }    //滑鼠點擊    @Override    public void mouseClicked(MouseEvent e) {        // TODO Auto-generated method stub        System.out.println("滑鼠點擊了 x = " + e.getX() + "y = " + e.getY());    }        //滑鼠按下，但是還沒有鬆開事件    @Override    public void mousePressed(MouseEvent e) {        // TODO Auto-generated method stub            }    //滑鼠按下，然後 鬆開 的事件    @Override    public void mouseReleased(MouseEvent e) {        // TODO Auto-generated method stub            }    //滑鼠移動到Mypanel    @Override    public void mouseEntered(MouseEvent e) {        // TODO Auto-generated method stub        System.out.println("滑鼠來");            }    //滑鼠離開Mypanel    @Override    public void mouseExited(MouseEvent e) {        // TODO Auto-generated method stub        System.out.println("滑鼠走");    }    @Override    public void paint(Graphics g) {        // TODO Auto-generated method stub        super.paint(g);    }    }

 

Java事件基礎