java.media类实现的可以播放WAV和MP3格式的文件

package jmf;

import java.awt.BorderLayout;
import java.awt.CheckboxMenuItem;
import java.awt.Choice;
import java.awt.Component;
import java.awt.FileDialog;
import java.awt.Frame;
import java.awt.Menu;
import java.awt.MenuBar;
import java.awt.MenuItem;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.IOException;

import javax.media.ControllerClosedEvent;
import javax.media.ControllerEvent;
import javax.media.ControllerListener;
import javax.media.EndOfMediaEvent;
import javax.media.Manager;
import javax.media.MediaLocator;
import javax.media.NoPlayerException;
import javax.media.Player;
import javax.media.PrefetchCompleteEvent;
import javax.media.RealizeCompleteEvent;
import javax.media.Time;

public class Test extends Frame implements ActionListener,ItemListener,ControllerListener{

 
 private static final long serialVersionUID = -7442370271675044300L;

 Player play;
 
 String filePath = "";
 
 Component cc,vc;
 
 boolean loop = false;

 Test(String title) {
  super(title);
  addWindowListener(new WindowAdapter() {
   public void windowClosing(WindowEvent e) {
    dispose();
   }

   public void windowClosed(WindowEvent e) {
    if (play != null) {
     play.close();
    }
    System.exit(0);
   }
  });
  Menu menu = new Menu("文件");
  MenuItem mi = new MenuItem("打开");
  mi.addActionListener(this);
  menu.add(mi);
  CheckboxMenuItem cmi = new CheckboxMenuItem("循环");
  cmi.addItemListener(this);
  menu.add(cmi);
  mi = new MenuItem("退出");
  mi.addActionListener(this);
  menu.add(mi);
  MenuBar mb = new MenuBar();
  mb.add(menu);
  setMenuBar(mb);
  setSize(300, 100);
  setVisible(true);
 }

 public static void main(String[] args) {
  new Test("媒体播放器1.0");
 }

 public void actionPerformed(ActionEvent e) {
        if(e.getActionCommand().equals("退出")){
         dispose();
         return;
        }
        FileDialog fd = new FileDialog(this,"选择播放文件",FileDialog.LOAD);
        fd.setDirectory(filePath);
        System.out.println(fd.getDirectory());
        fd.show();
        if(fd.getFile() == null){
         return;
        }
        filePath = fd.getDirectory();
        if(play!=null){
         play.close();
        }
        try {
   play = Manager.createPlayer(new MediaLocator("file:"+filePath+fd.getFile()));
  } catch (NoPlayerException e1) {
   System.out.println("不能创建播放器");
   e1.printStackTrace();
  } catch (IOException e1) {
   // TODO 自动生成 catch 块
   e1.printStackTrace();
  }
  if(play == null){
   System.out.println("无法创建播放器.");
   return;
  }
  setTitle(fd.getFile());
  play.addControllerListener(this);
  play.prefetch();
 }

 public void itemStateChanged(ItemEvent e) {
             loop = !loop;
 }

 public void controllerUpdate(ControllerEvent e) {
  // TODO 自动生成方法存根
  if(e instanceof ControllerClosedEvent){
   if(vc!=null){
    remove(vc);
   }
   if(cc!=null){
    remove(cc);
   }
  }
  if(e instanceof EndOfMediaEvent){
   if(loop){
    play.setMediaTime(new Time(0));
    play.start();
   }
  }
  if(e instanceof PrefetchCompleteEvent){
   System.out.println("333");
   play.start();
   return;
  }
  if(e instanceof RealizeCompleteEvent){
   vc = play.getVisualComponent();
   if(vc!=null){
    add(vc);
    
   }
   cc = play.getControlPanelComponent();
   if(cc!=null){
    add(cc,BorderLayout.SOUTH);
   }
   pack();
  }
 }

}