multimediademo.java

Java程序设计大学教程程序源代码

/*
 * MultimediaDemo.java
 * 参见教程239页 示例程序8-3
 * Created on 2005年7月16日, 上午9:25
 */

package jbookch8;

//import java.util.*;
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import java.net.*;
import javax.swing.*;

public class MultimediaDemo extends javax.swing.JApplet {
    public void init() {
        //获取媒体资源
        getResource();
        urlImg=getImage(imgurl);//加载图片
        auBird=getAudioClip(auurl);//加载声音
       //添加Swing组件
        Container contentPane=getContentPane();
        btn.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent event) {
                birdWhistle();
            }
        });
        contentPane.add(new JLabel("飞 动 的 天 使",SwingConstants.CENTER),"North");
        contentPane.add(btn,"South");
     }
    
    public void paint(Graphics g) {
        super.paint(g); 
        g.drawImage(urlImg,20,20,this);
    }
    
    private void birdWhistle() {
        auBird.play();
    }
    
    private void getResource()  {
        try{
            auurl=new URL(getCodeBase(),"bird.au");
            imgurl=new URL(getCodeBase(),"fly.gif");
        }catch (MalformedURLException e){
            e.printStackTrace();
        }
    }
    
    Image urlImg;
    AudioClip auBird ;
    JButton btn=new JButton("鸣叫");
    URL imgurl;
    URL auurl;
}