1.建立工作的物件,實現job介面

//定義工作的類
public class HelloWorld implements Job{

    public void execute(JobExecutionContext arg0) throws JobExecutionException {
        System.out.println("你好");
    }

}

2.使用demo

public class Demo3 {

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

        //1.定時器物件
 

        Scheduler scheduler = StdSchedulerFactory.getDefaultScheduler();

        //2.工作物件
        JobDetail job = JobBuilder.newJob(HelloWorld.class).withIdentity("job1", "group1").build();

        //3.觸發物件
        Trigger trigger = TriggerBuilder.newTrigger().withIdentity("t1", "group1").withSchedule(CronScheduleBuilder.cronSchedule("2/5 * * * * ?"
 
)).build();

        //4.定時器關聯工作物件和觸發物件
        scheduler.scheduleJob(job, trigger);

        scheduler.start();
    }

}