Java 독립형 환경에서 예약된 작업을 구현하는 방법

 public static void main(String[] args)
    {
          TimerTask task = new TimerTask() {
              public void run() {
                  System.out.println("当前时间: " + new Date() + "n" +
                          "线程名称: " + Thread.currentThread().getName());
              }
          };
          Timer timer = new Timer("Timer");
          long delay = 5000L;
          timer.schedule(task, delay);
          System.out.println("当前时间: " + new Date() + "n" +
                  "线程名称: " + Thread.currentThread().getName());
    }

当前时间: Wed Apr 06 22:05:04 CST 2022n线程名称: main
当前时间: Wed Apr 06 22:05:09 CST 2022n线程名称: Timer

 public static void main(String[] args) throws InterruptedException
   {
      ScheduledExecutorService executorService =
              Executors.newScheduledThreadPool(3);
      // 执行任务: 每 10秒执行一次
      executorService.scheduleAtFixedRate(() -> {
          System.out.println("执行任务：" + new Date()+",线程名称: " + Thread.currentThread().getName());
      }, 1, 10, TimeUnit.SECONDS);
    }

@EnableScheduling
@Component
public class SpringTask
{
    private Logger logger = LoggerFactory.getLogger(SpringTask.class);
    private static final SimpleDateFormat dateFormat = new SimpleDateFormat(
            "HH:mm:ss");
    /**
     * fixedRate：固定速率执行。每5秒执行一次。
     */
    @Scheduled(fixedRate = 5000)
    public void invokeTaskWithFixedRate()
    {
        logger.info("Fixed Rate Task :  Current Time  is  {}",
                dateFormat.format(new Date()));
    }
    /**
     * fixedDelay：固定延迟执行。距离上一次调用成功后2秒才执。
     */
    @Scheduled(fixedDelay = 2000)
    public void invokeTaskWithFixedDelay()
    {
        try
        {
            TimeUnit.SECONDS.sleep(3);
            logger.info("Fixed Delay Task : Current Time  is  {}",
                    dateFormat.format(new Date()));
        }
        catch (InterruptedException e)
        {
            logger.error("invoke task error",e);
        }
    }
    /**
     * initialDelay:初始延迟。任务的第一次执行将延迟5秒，然后将以5秒的固定间隔执行。
     */
    @Scheduled(initialDelay = 5000, fixedRate = 5000)
    public void invokeTaskWithInitialDelay()
    {
        logger.info("Task with Initial Delay : Current Time is  {}",
                dateFormat.format(new Date()));
    }
    /**
     * cron：使用Cron表达式,每隔5秒执行一次
     */
    @Scheduled(cron = "0/5 * * * * ? ")
    public void invokeTaskWithCronExpression()
    {
        logger.info("Task Cron Expression:  Current Time  is  {}",
                dateFormat.format(new Date()));
    }
}