java Callable FutureTask Excecuter: How to listen to finished task

Question

I\'m quite new to executer services. Liked doing everything myself, but I think it\'s time to trust these services.

I want to hand by Executer a R

Answer 1

If you can make a specific assumption of using a java.util.concurrent.ThreadPoolExecutor, then you can use its hook methods; afterExecute() and beforeExecute().

http://download.oracle.com/javase/6/docs/api/java/util/concurrent/ThreadPoolExecutor.html

They are not as elegant as the ListenableFuture, but it might be an adequate solution provided you need only one type of a "listener" for a given executor instance.