java - Trouble playing wav in Java

Question

I'm trying to play a

PCM_UNSIGNED 11025.0 Hz, 8 bit, mono, 1 bytes/frame

file as described here (1) and here(2).

The first approach works, but I don't want to depend on sun.* stuff. The second results in just some leading frames being played, that sounds more like a click. Can't be an IO issue as I'm playing from a ByteArrayInputStream.

Plz share your ideas on why might this happen. TIA.

Answer 1

I'm not sure why the second approach you linked to starts another thread; I believe the audio will be played in its own thread anyway. Is the problem that your application finishes before the clip has finished playing?

import javax.sound.sampled.*;
import java.io.File;
import java.io.IOException;
import javax.sound.sampled.LineEvent.Type;

private static void playClip(File clipFile) throws IOException, 
  UnsupportedAudioFileException, LineUnavailableException, InterruptedException {
  class AudioListener implements LineListener {
    private boolean done = false;
    @Override public synchronized void update(LineEvent event) {
      Type eventType = event.getType();
      if (eventType == Type.STOP || eventType == Type.CLOSE) {
        done = true;
        notifyAll();
      }
    }
    public synchronized void waitUntilDone() throws InterruptedException {
      while (!done) { wait(); }
    }
  }
  AudioListener listener = new AudioListener();
  AudioInputStream audioInputStream = AudioSystem.getAudioInputStream(clipFile);
  try {
    Clip clip = AudioSystem.getClip();
    clip.addLineListener(listener);
    clip.open(audioInputStream);
    try {
      clip.start();
      listener.waitUntilDone();
    } finally {
      clip.close();
    }
  } finally {
    audioInputStream.close();
  }
}