Enthuware

The wording for answer choice 4 is very deceiving. If you state "...multiple instances of a task..." that leads the reader to automatically think of invokeAll and invokeAny methods of the ExecutorService interface. Those methods only take Collection<? extends Callable>. Therefore using a callable would be more appropriate than a Runnable since that is the only choice we have.

That is a good point. I will let it be as it is for now to see how other users feel about it. Technically, you can submit multiple tasks using multiple calls to submit methods.

thank you!
Paul.

Np but honestly, Thank You tons for all your help and quick responses!

I had the same problem, thought the question was referring to invokeAll.

Shouldn't "thread" start with a capital letter in the first answer choice as in the second answer choice?

If option 3 instead of
'When your task does not return any result but you want to execute the task asynchronously.'
Would say:
'When your task does not return any result and you want to execute it in a separate Thread.'
Would it (also) be a correct answer?

Yes, it would be correct then as well.