MiniMusicCmdLine.java

package BeatBox;

import javax.sound.midi.*;

public class MiniMusicCmdLine {

	public static void main(String[] args) {
		args = new String[] {"30" , "80"};
		
		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);
		}
	}
	
	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();
			
			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();
		}
	}

}