用java打包成jar可执行文件并执行windows定时任务

1、写一个音乐播放java类

package com.rupeng.test2;

import javax.sound.midi.MidiEvent;
import javax.sound.midi.MidiSystem;
import javax.sound.midi.Sequence;
import javax.sound.midi.Sequencer;
import javax.sound.midi.ShortMessage;
import javax.sound.midi.Track;

public class MiniMusicApp {
    public static void main(String[] args) {
        MiniMusicApp mini = new MiniMusicApp();
        mini.play();
    }

    public void play() {
        try {
            // Get a sequencer and open it
            Sequencer player = MidiSystem.getSequencer();
            player.open();

            Sequence seq = new Sequence(Sequence.PPQ, 4); //Treat the arguments as Ready-bake arguments

            Track track = seq.createTrack(); // Ask the sequence for a track

            // Put some MidiEvents into the Track, the setMessage() method is what we should really care
            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); // Give the sequence to the Sequencer
                                     // like pushing a CD to a CD player

            player.start();  // Start the sequencer like pushing PLAY
        }

        catch(Exception ex) {
            ex.printStackTrace();
        }
    }  // Close play
} 

2、eclipse导出jar包可执行文件

在eclpse中找到你要导出的java程序 选中它

3、在cmd中检测运行是否jar文件成功

4、在windows中加入定时任务

点击开始按钮，依次选择打开“所有程序—附件—系统工具”，找到“任务计划程序”即可打开Win7系统的任务计划设置面板。也可以点击Win7开始按钮，在多功能搜索框中输入“任务计划”，直接从搜索结果中打开。

创建基本任务

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