Java Applet: Playing Music Fails

Question

I would like to play spacemusic.au in my applet. The music file is located in both Game/src and Game/bin. However, it does not play the music when I click "play in loop". Since it is .au file, it should be good to play. What would be causing this?

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

public class playMusic extends Applet 
implements ActionListener{
   Button play,stop;
   AudioClip audioClip;
   public void init(){
      play = new Button("  Play in Loop  ");
      add(play);
      play.addActionListener(this);
      stop = new Button("  Stop  ");
      add(stop);
      stop.addActionListener(this);
      audioClip = getAudioClip(getCodeBase(), "spacemusic.au");
   }
   public void actionPerformed(ActionEvent ae){
      Button source = (Button)ae.getSource();
      if (source.getLabel() == "  Play in Loop  "){
         audioClip.play();
      }  
      else if(source.getLabel() == "  Stop  "){
         audioClip.stop();
      }
   }
}

There is no exception. It just does not play the music, as if it cannot located the file, but it's there. — jamie_y, Mar 28 '14 at 17:14
1) Why code an applet? If it is due to spec. by teacher, please refer them to [Why CS teachers should stop teaching Java applets](http://programmers.blogoverflow.com/2013/05/why-cs-teachers-should-stop-teaching-java-applets/). 2) Why AWT rather than Swing? See my answer on [Swing extras over AWT](http://stackoverflow.com/a/6255978/418556) for many good reasons to abandon using AWT components. — Andrew Thompson, Mar 29 '14 at 06:09

score 1 · Answer 1 · answered Mar 28 '14 at 17:22

1

You cannot compare strings in this way

if (source.getLabel() == "  Play in Loop  "){

you should use .equals

if (source.getLabel().equals("  Play in Loop  ")){

Anyway, use a boolean variable to represent if the music is playing or not

answered Mar 28 '14 at 17:22

Marco Acierno

14,682
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Or check source == play and source == stop – flup Mar 28 '14 at 17:23
Thanks for a suggestion. But that did not fix the issue. – jamie_y Mar 28 '14 at 17:25
Still not plays? Are you sure texts are equals? Can you add debug messages inside actionPerfomed where you print .getLabel() ? – Marco Acierno Mar 28 '14 at 17:26
I put a debug message in actionPerfomed and it is printing. However, I still do not hear any music from the program. – jamie_y Mar 28 '14 at 17:38
Did you add a debug message before audioClip.play() and audioClip.stop()? – Marco Acierno Mar 28 '14 at 17:40

jamie_y · Accepted Answer · 2014-03-29T21:22:12.663

1

Solved this by createding a Music folder and placed the music file in there, and referencing as "Music/spacemusic.au" See this tutorial: https://www.youtube.com/watch?v=UaNf53WflLI

edited Mar 29 '14 at 21:22

answered Mar 28 '14 at 17:46

jamie_y

1,719
2
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score 0 · Answer 3 · edited Jun 20 '20 at 09:12

Print the value of getCodeBase() and now you can figure it out where is the problem.

Is it pointing to a correct location or not, if yes then is spacemusic.au file present there?

Replace you actionPerformed method (use equals in place of == or use == for object reference itself)

public void actionPerformed(ActionEvent ae) {
    Button source = (Button) ae.getSource();
    if (source == play) {
        audioClip.play();
    } else if (source == stop) {
        audioClip.stop();
    }
}

Java Applet: Playing Music Fails

3 Answers3