1. Maven依赖

<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. 业务处理类:

import org.quartz.*;
import java.text.SimpleDateFormat;
/**
 *
 * Created by l1 on 2016/10/8.
 */
 class MyJob implements Job{
    @Override
    public void execute(JobExecutionContext context) throws JobExecutionException {
        // job 的名字
        String jobName = context.getJobDetail().getKey().getName();

        // 任务执行的时间
        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy 年 MM 月 dd 日  HH 时 mm 分 ss 秒");
        String jobRunTime = dateFormat.format(java.util.Calendar.getInstance().getTime());

        // 输出任务执行情况
        System.out.println("任务 : " + jobName + " 在  " +jobRunTime + " 执行了 ");
    }
}

3. Quartz管理类:

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

import java.util.concurrent.TimeUnit;

import static org.quartz.CronScheduleBuilder.cronSchedule;
import static org.quartz.JobBuilder.newJob;
import static org.quartz.TriggerBuilder.newTrigger;

/**
 *
 * Created by l1 on 2016/10/8.
 */
public class QuartzManager {

    private static final String  JOB_GROUP_NAME = "JOB_GROUP_NAME";
    private static final String  TRIGGER_GROUP_NAME = "TRIGGER_GROUP_NAME";

    /**
     * 添加定时任务
     */
    public static void addJob(String jobName,String jobGroupName,String triggerName,String triggerGroupName,Class cls,String time){
        try {
            Scheduler scheduler = StdSchedulerFactory.getDefaultScheduler();
            scheduler.start();
            JobDetail jobDetail = newJob(cls).withIdentity(jobName, jobGroupName).build();
            CronTrigger cronTrigger
                    = newTrigger().withIdentity(triggerName, triggerGroupName).withSchedule(cronSchedule(time)).build();
            scheduler.scheduleJob(jobDetail,cronTrigger);

        } catch (SchedulerException e) {
            e.printStackTrace();
        }
    }
    public static void addJob(String jobName,String triggerName,String groupName,Class cls,String time){
        addJob(jobName,groupName,triggerName,groupName,cls,time);
    }
    public static void addJob(String jobName,String triggerName,Class cls,String time){
        addJob(jobName,JOB_GROUP_NAME,triggerName,TRIGGER_GROUP_NAME,cls,time);
    }

    /**
     * 删除定时任务
     */
    public static boolean deleteJob(String jobName,String groupName){
        boolean result = false;
        try {
            Scheduler scheduler = StdSchedulerFactory.getDefaultScheduler();
            JobKey jobKey = new JobKey(jobName,groupName);
            if(scheduler.checkExists(jobKey)){
                result = scheduler.deleteJob(jobKey);
            }
        } catch (SchedulerException e) {
            e.printStackTrace();
        }
        return result;
    }
    public static  void deleteJob(String jobName){
        deleteJob(jobName,JOB_GROUP_NAME);
    }

    /**
     * 停止任务
     */
    public static void pauseJob(String jobName,String groupName){
        try {
            Scheduler scheduler = StdSchedulerFactory.getDefaultScheduler();
            JobKey jobKey = new JobKey(jobName,groupName);
            if(scheduler.checkExists(jobKey)){
                scheduler.pauseJob(jobKey);
            }
        } catch (SchedulerException e) {
            e.printStackTrace();
        }
    }
    public static void pauseJob(String jobName){
        pauseJob(jobName,JOB_GROUP_NAME);
    }
    /**
     * 再次启动Job
     * @param jobName
     * @param groupName
     */
    public static  void resumeJob(String jobName,String groupName){
        try {
            Scheduler scheduler = StdSchedulerFactory.getDefaultScheduler();
            JobKey jobKey = new JobKey(jobName,groupName);
            if(scheduler.checkExists(jobKey)){
                scheduler.resumeJob(jobKey);
            }
        } catch (SchedulerException e) {
            e.printStackTrace();
        }
    }
    public static  void resumeJob(String jobName){
        resumeJob(jobName,JOB_GROUP_NAME);
    }
    public static void main(String[] args) {
        QuartzManager.addJob("job1","trigger1",MyJob.class,"0/15 * * * * ?");
        try {
            TimeUnit.SECONDS.sleep(30);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        QuartzManager.deleteJob("job1");
    }

}

实现Quartz的动态增删改查