1、首先：匯入quartz相關的jar包，這裡我用的是maven構建的專案，pom.xml檔案匯入如下：

  <dependency>
      <groupId>org.quartz-scheduler</groupId>
      <artifactId>quartz</artifactId>
      <version>2.2.1</version>
  </dependency>
  <dependency>
      <groupId>org.quartz-scheduler</groupId>
      <artifactId>quartz-jobs</artifactId>
      <version>2.2
 
.1</version>
  </dependency>

2、定義要進行定時任務類（該類實現了Quartz 下的job類）：

import org.quartz.Job;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;

public class MyJob implements Job {

    @Override
    public void execute(JobExecutionContext arg0) throws JobExecutionException {
        
 
// TODO Auto-generated method stub
        System.out.println("開啟了定時任務");

    }

}

3、接下來要做的就是按照定時任務的固定步驟來做即可：1：定義排程器並且開啟   2：定義任務器  3：定義觸發器   4 註冊 

import org.quartz.*;
import org.quartz.impl.StdSchedulerFactory;

public class QuartzDemo {

    public static
 
 void main(String[] args) {
        try {
            new QuartzDemo().quartzTest();
        } catch (InterruptedException i) {
            i.printStackTrace();
        }
    }

    public void quartzTest() throws InterruptedException{
        try {
            //獲取排程器
            Scheduler scheduler = StdSchedulerFactory.getDefaultScheduler();
            scheduler.start();
            //建立任務器：定義任務細節
            JobDetail jobDetail = JobBuilder.newJob(MyJob.class).withIdentity("job1", "group1").build();
            ScheduleBuilder scheduleBuilder =SimpleScheduleBuilder.simpleSchedule().withIntervalInSeconds(5).repeatForever();
            //定義觸發器
            Trigger trigger=TriggerBuilder.newTrigger().withIdentity("simpleTrigger", "simpleTriggerGroup")
                    .withSchedule(scheduleBuilder).startNow().build();

            //將任務和觸發器註冊到排程器中
            scheduler.scheduleJob(jobDetail, trigger);
            // Thread.sleep(1000*30);
        } catch (SchedulerException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}