ScheduledExecutorService or ScheduledThreadPoolExecutor

Creating ScheduledThreadPoolExecutor Using Executors

you can also look this one

http://tutorials.jenkov.com/java-util-concurrent/scheduledexecutorservice.html

if you want to use it periodically, you should use this method

scheduleAtFixedRate (Runnable, long initialDelay, long period, TimeUnit timeunit)

ScheduledExecutorService is an interface (a contract) and ScheduledThreadPoolExecutor implements that interface.

Since you cannot directly instantiate an interface, you have to use implementation through instantiating ScheduledThreadPoolExecutor directly or through means of factory method such as java.util.concurrent.Executors that returns an instance of ScheduledThreadPoolExecutor.

e.g

ScheduledExecutorService scheduler =
 Executors.newScheduledThreadPool(1);

scheduler.scheduleAtFixedRate(beeper, 10, 10, SECONDS); //returns a ScheduledFuture

Have a look at Scheduled Executor Service Usage for Andriod

This is the same, ScheduledThreadPoolExecutor is an implementation of ScheduledExecutorService