need to run specific functionality at specific interval in java

Question

I have a specific requirement.

I have a notification functionality which sends the email to all the systems clients. The code is written in java.

What i want to

Answer 1

Why not use a ScheduledThreadPoolExecutor which allows you to schedule tasks to execute in future.

ScheduledExecutorService scheduledExecutorService =
        Executors.newScheduledThreadPool(5);

ScheduledFuture scheduledFuture =
    scheduledExecutorService.schedule(new Callable() {
        public Object call() throws Exception {
            System.out.println("Executed!");
            return "Called!";
        }
    },
    5,
    TimeUnit.SECONDS);