using MIDI classes: HF Java

[Michael Farinha]

Going through some of the code in Head First Java there is a command line Midi player that I created, copied from the book. However whenever I run it, it makes a sound but doesn't end the program, I have to hit [ctrl] + c to end it.
What is it that I'm missing to end the application after the sound plays?
Here is the whole code:

import javax.sound.midi.*;
 
public class MiniMusicCmdLine { //this is the first one

public static void main(String[] args) {
MiniMusicCmdLine mini = new MiniMusicCmdLine();
if (args.length < 2) {
System.out.println("Don't forget the instrument and note args");
} else {
int instrument = Integer.parseInt(args[0]);
int note = Integer.parseInt(args[1]);
mini.play(instrument, note);
}//end if
}//close main

public void play(int instrument, int note) {
try {
Sequencer player = MidiSystem.getSequencer();
player.open();
Sequence seq = new Sequence(Sequence.PPQ, 4);
Track track = seq.createTrack();

MidiEvent event = null;

ShortMessage first = new ShortMessage();
first.setMessage(192, 1, instrument, 0);
MidiEvent changeInstrument = new MidiEvent(first, 1);
track.add(changeInstrument);

ShortMessage a = new ShortMessage();
a.setMessage(144, 1, note, 100);
MidiEvent noteOn = new MidiEvent(a, 1);
track.add(noteOn);

ShortMessage b = new ShortMessage();
b.setMessage(128, 1, note, 100);
MidiEvent noteOff = new MidiEvent(b, 16);
track.add(noteOff);
player.setSequence(seq);
player.start();
} catch (Exception ex) {
ex.printStackTrace();
}//close try
}//close play
}//close class

[ September 24, 2006: Message edited by: Michael Farinha ]

[Daniel Gagnon]

I know that if you use a GUI, you have to explicitely terminate the program but I would not have thought that it was true for everything in javax...

In any case, add System.exit(0) at the point where you want to terminate.