Java实现的简单音乐播放器功能示例

import java.applet.AudioClip;import java.awt.*;import java.net.*;import java.awt.event.*;import java.io.*;import java.applet.*;import javax.swing.*;import javax.swing.JButton;import javax.swing.JComboBox;import javax.swing.JDialog;public class MusicPlayer extends JDialog implements Runnable,ItemListener,ActionListener{  /**   *   */  private static final long serialVersionUID = 1L;  Thread thread;  JComboBox<Serializable> choiceMusic;  AudioClip clip;  JButton buttonPlay,buttonLoop,buttonStop;  String str;  MusicPlayer(){    thread=new Thread(this);    choiceMusic=new JComboBox();    choiceMusic.addItem("选择音频文件");    choiceMusic.addItem("src/1.wav");    choiceMusic.addItem("‪2.wav");    choiceMusic.addItem("3.wav");    choiceMusic.addItemListener(this);    buttonPlay=new JButton("播放");    buttonLoop=new JButton("循环");    buttonStop=new JButton("停止");    buttonPlay.addActionListener(this);    buttonLoop.addActionListener(this);    buttonStop.addActionListener(this);    setLayout(new FlowLayout());    add(choiceMusic);    add(buttonPlay);    add(buttonLoop);    add(buttonStop);    setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);    setSize(350,80);  }  @Override  public void actionPerformed(ActionEvent e) {    if(e.getSource()==buttonPlay)      clip.play();    else if(e.getSource()==buttonLoop)      clip.loop();    else if(e.getSource()==buttonStop)      clip.stop();  }  @Override  public void itemStateChanged(ItemEvent arg0) {    str=choiceMusic.getSelectedItem().toString();    if(!(thread.isAlive())){      thread=new Thread(this);    }    try{thread.start();    }    catch(Exception ee){}  }  @Override  public void run() {    try {    File file=new File(str);    URI uri=file.toURI();    URL url=uri.toURL();    clip=Applet.newAudioClip(url);    } catch (MalformedURLException e) {    }  }  public static void main(String[] args) {    MusicPlayer musicplayer=new MusicPlayer();    musicplayer.setVisible(true);  }}