Java的课堂实验

//【例7-7】  鼠标事件示例。
//程序清单7-7: MouseTest.java
import java.awt.*;
import java.applet.*;
import java.awt.event.*;

public class songs extends Applet implements MouseMotionListener 
{
    
    AudioClip audioClip;
    String text = "";

    int x;
    int y;

    Image picture; 

    //加载图片
    public void init() 
    {
        picture = getImage(getCodeBase(), "image.jpg");
        x = 0;
        y = 0;
        addMouseMotionListener(this);
    }

    //重写
    //使得显示的文本随鼠标移动而移动
    public void paint(Graphics g) {
        g.drawImage(picture, 0, 0, this); 
        g.drawString(text, x, y);
    }

    //核心（？
    public void mouseMoved(MouseEvent e) 
    {
        x = e.getX();
        y = e.getY();
        audioClip = getAudioClip(getCodeBase(), "Sample.wav");
        text = "开始放歌辽~~~";
        audioClip.loop();
        repaint();
    }

//    public void mouseReleased(MouseEvent e) 
//    {
//        text = " ";
//        repaint();
//    }

    //必须有这个，这样子才能运行，都要重写
    public void mouseDragged(MouseEvent arg0) {
        // TODO Auto-generated method stub
        
    }

//    public void mouseEntered(MouseEvent e) {
//    }
//
//    public void mouseExited(MouseEvent e) {
//    }
//
//    public void mouseClicked(MouseEvent e) {
//    }
}