1 import javax.sound.midi.*; 2  3 public class Midi { 4     public void play(int instrument, int note) { 5         try { 6             Sequencer player = MidiSystem.getSequencer(); 7             player.open(); 8              9             Sequence seq = new Sequence(Sequence.PPQ, 4);//divisionType, resolution10             11             Track track = seq.createTrack();12             13             ShortMessage first = new ShortMessage();14             first.setMessage(192, 1, instrument, 0);15             MidiEvent change = new MidiEvent(first, 1);16             track.add(change);17             18             ShortMessage a = new ShortMessage();19             a.setMessage(144, 1, note, 100);//command channel data1 data220                                            //144 -note on 128 -note off21                                            //1 - 频道22                                            //44 - 音符 0-12723                                            //100 - 音道 24             MidiEvent noteOn = new MidiEvent(a, 1); //tick - the time-stamp for the event, in MIDI ticks25             track.add(noteOn);26             27             ShortMessage b = new ShortMessage();28             b.setMessage(128, 1, note, 100);//command channel data1 data229             MidiEvent noteOff = new MidiEvent(b, 16); //tick - the time-stamp for the event, in MIDI ticks30             track.add(noteOff);31             32             player.setSequence(seq);33             player.start();34             //while( player.isRunning() ) {35             //    try {36             //        Thread.sleep(1000);37             //    } catch (Exception e) {}38             //}39             //player.close();40             41         } catch( Exception ex) {42             ex.printStackTrace();43         }44     }45     46     public static void main(String[] args) {47         if (args.length < 2) {48             System.out.println("Don‘t forget the instrument and note args");49         }50         else {51             int instrument = Integer.parseInt(args[0]);52             int note = Integer.parseInt(args[1]);53             Midi midi = new Midi();54             midi.play(instrument, note);55         }        56     }57 }