怎样在java程序中播放音乐

最近学JAVA，在清华大学的那本书上看到一个电子相册的实例，于是边敲代码边学习，代码如下
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import sun.audio.*;
import java.io.*;


public class MyAlbum2 extends MyAlbum1 implements ItemListener {
AudioData theData=null;
AudioDataStream nowPlaying=null;

public MyAlbum2(){
setTitle("ZNL");
choiceMusic.addItemListener(this);
play("1.mp3");
}

public void play(String str){
try{
FileInputStream fis=new FileInputStream("audio\\"+str);
AudioStream as=new AudioStream(fis);
theData = as.getData();

}
catch(IOException e){
System.err.println(e);
}
if(theData!=null){
if(nowPlaying==null) {
AudioDataStream ads=new AudioDataStream(theData);
AudioPlayer.player.start(ads);
nowPlaying=ads;
}
else{
stop();
ContinuousAudioDataStream cads=new ContinuousAudioDataStream(theData);
nowPlaying=cads;
}
}
}
    public void stop(){
    if(nowPlaying!=null){
    AudioPlayer.player.stop(nowPlaying);
    nowPlaying=null;
   
    }
    }