java编程播放midi音乐

package test;

import javax.sound.midi.*;
import javax.sound.sampled.*;
import java.io.*;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2003</p>
 * <p>Company: SinoSoft</p>
 * @author pete
 * @version 1.0
 */

public class PlayMidi implements Runnable{
    File sound;
    Sequence seq;
    Sequencer midi;
    Thread runner;
    public PlayMidi(String f){
        try {
            sound=new File(f);
            seq=MidiSystem.getSequence(sound);
            midi=MidiSystem.getSequencer();
            midi.open();
            midi.setSequence(seq);
        }
        catch (Exception ex) {
        }
    }

    public void run(){
        try {
            while(true){
                if(!midi.isRunning())midi.start();
                Thread.sleep(1000);
            }
        }
        catch (Exception ex) {
            ex.printStackTrace();
        }
    }
    public void playMidi(){
        try
        {
            //midi.start();
            if(runner==null){
                runner=new Thread(this);
                runner.start();
            }
        }
        catch (Exception ex)
        {
        }
    }
    public void stopMidi(){
        try
        {
            runner.stop();
            runner=null;
            midi.stop();
        }
        catch (Exception ex)
        {
        }
    }

    public static void main(String[] args)
    {
        PlayMidi playMidi1 = new PlayMidi("mytest.mid");
        playMidi1.playMidi();
        playMidi1.stopMidi();
    }
}