How to stop a scheduled task that was started using @Scheduled annotation?

Question

I have created a simple scheduled task using Spring Framework\'s @Scheduled annotation.

 @Scheduled(fixedRate = 2000)
 public void doSomething() {}
         


        

Answer 1

Another approach that I have not found yet. Simple, clear and thread safe.

1. In your configuration class add annotation:

   @EnableScheduling

2. This and next step in your class where you need start/stop scheduled task inject:

   @Autowired TaskScheduler taskScheduler;

3. Set fields:

    private ScheduledFuture yourTaskState;
    private long fixedRate = 1000L;
   

4. Create inner class that execute scheduled tasks eg.:

    class ScheduledTaskExecutor implements Runnable{
        @Override
        public void run() {
          // task to be executed
        }
    }
   

5. Add start() method:

    public void start(){
        yourTaskState = taskScheduler.scheduleAtFixedRate(new ScheduledTaskExecutor(), fixedRate);
    }
   

6. Add stop() method:

    public void stop(){
        yourTaskState.cancel(false);
    }
   

TaskScheduler provide other common way for scheduling like: cron or delay.

ScheduledFuture provide also isCancelled();