Quartz中SimpleTrigger的探讨

import java.util.Date;

import org.quartz.JobDetail;
import org.quartz.Scheduler;
import org.quartz.SchedulerFactory;
import org.quartz.SimpleTrigger;
import org.quartz.impl.StdSchedulerFactory;

public  class SimpleTriggerTest
{

    public static void main(String[] args) throws Exception
    {
        SchedulerFactory schedulerFactory = new StdSchedulerFactory();
        Scheduler scheduler = schedulerFactory.getScheduler();
        // 系统当前时间10秒后
        long startTime = System.currentTimeMillis() + 10000L;
        SimpleTrigger trigger = new SimpleTrigger("myTrigger", null, new Date(
                startTime), null, 0, 0L);

        JobDetail jobDetail = new JobDetail();
        jobDetail.setJobClass(StringTest.class);
        jobDetail.setName("test");
        jobDetail.setGroup("A");

        scheduler.scheduleJob(jobDetail, trigger);
        scheduler.start();
    }
}

SimpleTrigger trigger =  new SimpleTrigger("myTrigger",
                                             null,
                                             new Date(),
                                             null,
                                            SimpleTrigger.REPEAT_INDEFINITELY,
                                            60L * 1000L);

long endTime = System.currentTimeMillis() + 40000L;

  SimpleTrigger trigger =  new SimpleTrigger("myTrigger",
                                            "myGroup",
                                             new Date(),
                                             new Date(endTime),
                                            SimpleTrigger.REPEAT_INDEFINITELY,
                                            10L * 1000L);

java.util.Calendar cal =  new java.util.GregorianCalendar(2008, cal.MARCH, 9);
  cal.set(cal.HOUR, 10);
  cal.set(cal.MINUTE, 30);
  cal.set(cal.SECOND, 0);
  cal.set(cal.MILLISECOND, 0);

  Data startTime = cal.getTime()

  SimpleTrigger trigger =  new SimpleTrigger("myTrigger",
                                             null,
                                            startTime,
                                             null,
                                            5,
                                            30L * 1000L);