Play A Sound When Button Is Clicked?

im trying to play a sound when button is clicked. here is the following code

InputStream in;
try {
in = new FileInputStream(new File("failure1.wav"));
AudioStream audios = new AudioStream(in);
AudioPlayer.player.start(audios);
} catch (Exception e) {
}

just wondering why it does load;

i do get the warning

warning: AudioStream is internal proprietary API and may be removed in a future release
AudioStream audios = new AudioStream(in);
warning: AudioStream is internal proprietary API and may be removed in a future release
AudioStream audios = new AudioStream(in);
warning: AudioPlayer is internal proprietary API and may be removed in a future release
AudioPlayer.player.start(audios);