Quartz Scheduler(2.2.1) - hello world

<dependencies>
    <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>
    
    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>1.2.16</version>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-log4j12</artifactId>
        <version>1.6.6</version>
        <scope>provided</scope>
    </dependency>
</dependencies>

org.quartz.scheduler.instanceName = MyScheduler
org.quartz.threadPool.threadCount = 3
org.quartz.jobStore.class = org.quartz.simpl.RAMJobStore

package com.huey.hello.quartz;

import java.util.Date;

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

import com.huey.hello.quartz.utils.DateUtils;

public class HelloJob implements Job {

    /**
     * 实 现 org.quartz.Job 接口，并实现 execute 方法，在此方法执行业务逻辑 
     */
    public void execute(JobExecutionContext context) throws JobExecutionException {
        Date fireTime = context.getFireTime();        
        System.out.println("Hello Quartz Scheduler! " + DateUtils.dateToStr(fireTime));                
    }
    
}

package com.huey.hello.quartz;

import org.quartz.CronExpression;
import org.quartz.CronScheduleBuilder;
import org.quartz.JobBuilder;
import org.quartz.JobDetail;
import org.quartz.Scheduler;
import org.quartz.SchedulerFactory;
import org.quartz.Trigger;
import org.quartz.TriggerBuilder;
import org.quartz.impl.StdSchedulerFactory;

public class MainApp {

    public static void main(String[] args) throws Exception {
        
        // 创建 SchedulerFactory 并获取 Scheduler 对象实例
        SchedulerFactory schedulerFactory = new StdSchedulerFactory();
        Scheduler scheduler = schedulerFactory.getScheduler();
        
        // 通过 JobBuilder 创建 JobDetail 对象实例 
        JobDetail jobDetail = JobBuilder.newJob(HelloJob.class)
                                .withIdentity("helloJob", Scheduler.DEFAULT_GROUP)
                                .build(); 
        
        // 通过 TriggerBuilder 创建 Trigger 对象实例，设置每 5 秒调度一次任务
        Trigger trigger = TriggerBuilder.newTrigger()
                                .withIdentity("helloTrigger", Scheduler.DEFAULT_GROUP)
                                .withSchedule(CronScheduleBuilder.cronSchedule(new CronExpression("0/5 * * * * ?")))
                                .build();
        
        // 排定任务
        scheduler.scheduleJob(jobDetail, trigger);
        
        // 启动调度器 
        scheduler.start();
        // 
        Thread.sleep(20L * 1000L);
        // 关闭调度器
        scheduler.shutdown(true);
        
    }
    
}