Error with audio related Java code

 AudioPlayer AP = AudioPlayer.player;
        AudioStream AS;
        AudioData AD;

        sun.audio.ContinuousAudioDataStream loop = null;

        try{
            AS = new AudioStream( new FileInputStream("all_shook_up.wav"));
            AD = AS.getData();
            loop = new sun.audio.ContinuousAudioDataStream(AD);
        }catch(IOException error){}

        AP.start(loop);

This code doesn't seem to play the .wav file. No sound is played. What am I doing wrong? (I am aware that I could have declared and initialized my variables on the same line, but the separation has been done for clarity)