//audioSample.java
import java.awt.*;
import java.applet.*;
import java.awt.event.*;

public class audioSample extends Applet implements ActionListener{
  Label lb;                            //標(biāo)簽，顯示使用類方法的信息
  AudioClip clip;
  boolean looping=false;
  Button audioOnce=new Button("once"),
         audioLoop=new Button("loop"),
         audioStop=new Button("stop");

  public void init(){
    this.play(getCodeBase(),"audio/piano.wav");//此處調(diào)用Applet類的方法
    lb=new Label("調(diào)用Applet類方法.");
    clip=getAudioClip(getCodeBase(),"audio/spacemusic.au"); 
    //clip=getAudioClip(getDocumentBase(),"audio/canon.aiff");  //供試驗
    //clip=getAudioClip(getDocumentBase(),"audio/flourish.mid");//供試驗
    audioOnce.addActionListener(this);
    add(audioOnce);
    audioLoop.addActionListener(this);
    add(audioLoop);
    audioStop.addActionListener(this);
    add(audioStop);
    add(lb);
    validate();
  }

  public void start(){
    if(looping){
      clip.loop();
    }
  }

  public void stop(){
    if(looping){
      clip.stop();
    }
  }

  public void actionPerformed(ActionEvent e){
    if(e.getSource()==audioOnce){
      lb.setText("調(diào)用AudioClip類方法.");
      clip.play();          //此處調(diào)用AudioClip類的方法
      looping=true;
      audioStop.setEnabled(true);
    }
    else if(e.getSource()==audioLoop){
      lb.setText("調(diào)用AudioClip類方法.");
      clip.loop();
      looping=true;
      audioStop.setEnabled(true);
    }
    else{
      lb.setText("調(diào)用AudioClip類方法.");
      clip.stop();
      looping=false;
      audioStop.setEnabled(false);
    }
  }
}