Execute a single task with multiple threads on a schedule

Question

I have a function foo() that I want to be invoked by multiple threads on an interval. example: want to execute foo() every 100ms with x number of threads. I am unsure how to go about it.

I am looking at FixedThreadPool where you can instantiate a thread pool with number of workers. However when you invoke using this thread pool does it exhaust all threads at once and executes a task?

any ideas would be appreciated; thanks

Answer 1

For a single task being repeated, you do not need multiple threads.

Use a single-threaded scheduled executor service.

ScheduledExecutorService ses = Executors.newSingleThreadScheduledExecutor() ;

Define your task as a Runnable or Callable.

Runnable task = … ;

Schedule for repeated execution.

ScheduledFuture future = ses.scheduleWithFixedDelay( task , 0 , 100 , TimeUnit.MILLISECONDS ) ;

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