I am trying to insert data to the database in every 10 milisecond in a loop. So how can i wait between every inserting

Question

 @RequestMapping(value="/save",method = RequestMethod.POST)    
        public String save(@ModelAttribute("emp") Employee emp){    
            for(int i=0;i<5;i++) {
            dao.save(emp); 
            }
            return "redirect:/viewemp";//will redirect to viewemp request mapping    
        }

here I want to wait 10 milisecond after the method:

dao.save(emp);

score 1 · Accepted Answer · answered Mar 21 '21 at 12:37

If you want to pause then use java.util.concurrent.TimeUnit:

TimeUnit.SECONDS.sleep(1);

To sleep for one second or

TimeUnit.MINUTES.sleep(1);

To sleep for a minute.

As this is a loop, this presents an inherent problem - drift. Every time you run code and then sleep you will be drifting a little bit from running, say, every second. If this is an issue then don't use sleep.

Further, sleep isn't very flexible when it comes to control.

For running a task every second or at a one second delay I would strongly recommend a ScheduledExecutorService and either scheduleAtFixedRate or scheduleWithFixedDelay.

For example, to run the method myTask every second (Java 8):

public static void main(String[] args) {
    final ScheduledExecutorService executorService = Executors.newSingleThreadScheduledExecutor();
    executorService.scheduleAtFixedRate(App::myTask, 0, 1, TimeUnit.SECONDS);
}

private static void myTask() {
    System.out.println("Running");
}

And in Java 7:

public static void main(String[] args) {
    final ScheduledExecutorService executorService = Executors.newSingleThreadScheduledExecutor();
    executorService.scheduleAtFixedRate(new Runnable() {
        @Override
        public void run() {
            myTask();
        }
    }, 0, 1, TimeUnit.SECONDS);
}

private static void myTask() {
    System.out.println("Running");
}

I am trying to insert data to the database in every 10 milisecond in a loop. So how can i wait between every inserting

1 Answers1