任务调度

Timer TimerTask

public class TimerTest {
	public static void main(String[] args) {
		Timer timer1 = new Timer();
		timer1.schedule(new MyTask(), 1000,1000);
		Calendar cal = new GregorianCalendar(2019,4,29,19,15,10);
		timer1.schedule(new MyTask(),cal.getTime() , 200);
	}
	
}

class MyTask extends TimerTask {

	@Override
	public void run() {
		System.out.println("hello timer");
	}
	
}

QUARTZ

public class HelloJob implements Job {

    public HelloJob() {
    }


    public void execute(JobExecutionContext context)
        throws JobExecutionException {
    	System.out.println("-------start---------");
        System.out.println("Hello World! - " + new Date());
        System.out.println("-------end---------");
    }

}
public class QuartzTest {

  public void run() throws Exception {
    // 1、创建 Scheduler的工厂
    SchedulerFactory sf = new StdSchedulerFactory();
    //2、从工厂中获取调度器
    Scheduler sched = sf.getScheduler();  
    // 3、创建JobDetail
    JobDetail job = newJob(HelloJob.class).withIdentity("job1", "group1").build();
    // 时间
    Date runTime = evenSecondDateAfterNow();
    // 4、触发条件
    //Trigger trigger = newTrigger().withIdentity("trigger1", "group1").startAt(runTime).build();
    Trigger trigger  = newTrigger().withIdentity("trigger1", "group1").startAt(runTime)
            .withSchedule(simpleSchedule().withIntervalInSeconds(5).withRepeatCount(3)).build();
    // 5、注册任务和触发条件
    sched.scheduleJob(job, trigger);

    // 6、启动
    sched.start();


    try {
      // 100秒后停止
      Thread.sleep(100L * 1000L);
    } catch (Exception e) {
    }
    sched.shutdown(true);
  }

  public static void main(String[] args) throws Exception {

    QuartzTest example = new QuartzTest();
    example.run();

  }

}