audioclipdemo.java

JAVA学习源代码,大家可以好好参考,请多提宝贵意见

//AudioClipDemo.java
//<applet code="AudioClipDemo.class" width=230 height=120>
//</applet>
 import java.applet.*;
 import java.awt.*;
 import java.awt.event.*;
 import javax.swing.*;
 
 public class AudioClipDemo extends JApplet {
   private AudioClip sound;
   private JLabel jLabel; 
   private JButton playSound, loopSound, stopSound;
 
    public void init(){
   Container container = getContentPane();
   container.setLayout( new FlowLayout() );

   //初始化各按钮和标签
   jLabel = new JLabel("Please choose an operation");  //提示信息标签
   jLabel.setForeground( Color.red );
   container.add(jLabel);
   ButtonHandler handler = new ButtonHandler();

   playSound = new JButton( "Play" );      //播放按钮
   playSound.addActionListener( handler );
   container.add( playSound );

   loopSound = new JButton( "Loop" );   //循环播放按钮
   loopSound.addActionListener( handler );
   container.add( loopSound );

   stopSound = new JButton( "Stop" );  //停止播放按钮
   stopSound.addActionListener( handler );
   container.add( stopSound );

   //初始化AudioClip对象sound
   sound = getAudioClip( getDocumentBase(), "spacemusic.au" );

 } 

  //用户切换页面时，停止播放
   public void stop(){
     sound.stop();
   }

   //内部类ButtonHandler处理按键事件
   private class ButtonHandler implements ActionListener {

   public void actionPerformed( ActionEvent actionEvent ){
     if ( actionEvent.getSource() == playSound )
      sound.play();

    else if ( actionEvent.getSource() == loopSound )
     sound.loop();

    else if ( actionEvent.getSource() == stopSound )
      sound.stop();
    }
  }
}