scheduler.java

Java与模式 源代码

package com.javapatterns.chainofresp.scheduler;

import java.io.IOException;
import java.util.Calendar;
import java.util.Date;
import java.util.Timer;
import java.util.TimerTask;

public class Scheduler
{
    private static Timer timer = new Timer();

    public static void main(String[] args)
    {
        Calendar calendar = Calendar.getInstance();
        calendar.set(Calendar.HOUR_OF_DAY, 10);
        calendar.set(Calendar.MINUTE, 30);
        calendar.set(Calendar.SECOND, 30);
        Date time = calendar.getTime();

        timer.schedule(new ScheduledTask(), time);
        System.out.println("A job has been scheduled at " + time);
    }

    static class ScheduledTask extends TimerTask
    {
        public void run()
        {
            try
            {
                String command = "notepad c:/boot.ini";
                Process child = Runtime.getRuntime().exec(command);
                System.out.println("The scheduled job has been executed.");
            }
            catch (IOException e)
            {
                System.out.println("Exception " + e);
            }
        }
    }
}