[Ch13] MiniMiniMusicApp from the book

package ch13;

import javax.sound.midi.*;

public class MiniMiniMusicApp {

  public static void main(String[] args) {

    MiniMiniMusicApp mini = new MiniMiniMusicApp();

    mini.play();

  }

  public void play() {

    try {

      Sequencer player = MidiSystem.getSequencer();

      player.open();

      Sequence seq = new Sequence(Sequence.PPQ, 4);

      Track track = seq.createTrack();

      ShortMessage a = new ShortMessage();

      a.setMessage(144, 1, 44, 100);

      MidiEvent noteOn = new MidiEvent(a, 1);

      track.add(noteOn);

      ShortMessage b = new ShortMessage();

      b.setMessage(128, 1, 44, 100);

      MidiEvent noteOff = new MidiEvent(b, 16);

      track.add(noteOff);

      player.setSequence(seq);

      player.start();

    } catch (Exception ex) {

      ex.printStackTrace();

    }

  } // close play

} // close class

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