Question

Ho do you perform asynchronous tasks and notify about their finishing?
I see the next approaches(they are related, but…) for doing it:

1. AsynchTask (SwingWorkerTask) where there are the such methods like
   onPre() and onPost() with dispatching data to the UI thread
2. Callbacks/Delegates/Notifications(Notification Center)
3. Executor, Callable, Future (maybe)

What is the better choice for writing for example a mobile Rest client?
What technique do you use in your apps?

Answer 1

I usually use Guava ListenableFuture for such tasks. It simplifies almost every concurrent task I need because I don’t have to worry about many things in concurrency.

Also, as explained in the link:

The most important reason to use ListenableFuture is that it becomes
possible to have complex chains of asynchronous operations.