java 声音处理

import sun.audio.*;        //

 
import java.io.*;
import java.awt.event.*; 
import java.awt.*; 
public class AudioApplicationDemo extends Frame implements ActionListener
{ 
 
 AudioStream  as; 
       //创建功能按钮，用于控制声音操作
 
       Button btnStart=new Button("开发播放");
       Button btnPause=new Button("暂停播放");
       Button btnContinue=new Button("继续播放");
       public AudioApplicationDemo()
       { 
              try{ 
                     InputStream in = new FileInputStream ("D:\5.au");
                     //打开一个声音文件流作为输入
                     as = new AudioStream (in);
              }catch( Exception e){
                     e.printStackTrace();
             }             
              //给功能按钮添加事件监听器
 
              btnStart.addActionListener(this);
              btnPause.addActionListener(this);
              btnContinue.addActionListener(this);
              //把功能按钮加入到Applet容器中，并显示
 
              this.setLayout(new FlowLayout());
              this.add(btnStart);
              this.add(btnPause);
              this.add(btnContinue);
              //显示框架窗口
 
              this.pack(); 
              this.setVisible(true);
       } 
       public static void main( String[] args )
       { 
              AudioApplicationDemo fame=new AudioApplicationDemo();
              fame.addWindowListener(new WindowAdapter(){
                     public void windowClosing(WindowEvent e)
                     { 
                            System.exit(0);
                     }
              });
       } 
       //处理按钮事件
 
       public void actionPerformed(ActionEvent e)
       { 
              //如果AudioStream对象为空，则直接返回
 
              if( as==null ){ 
                     System.out.println("AudioStream object is not created!");
                     return;
              } 
              //获取用户激活的按钮
              Object cmd= e.getSource();
              if ( cmd == btnStart ){
                     //播放
 
                     AudioPlayer.player.start (as);               
              }else if( cmd == btnPause ){
                     //暂停
 
                     AudioPlayer.player.stop(as);
              }else if( cmd == btnContinue ){
                     //继续
 
                     AudioPlayer.player.start (as);
              }
       }
}