How to access a Runnable object by Thread?

Question

Possible duplicate: need-help-returning-object-in-thread-run-method

Hello. I have a class implementing runnable and I have a List, storing Threads instantiated with

Answer 1

The concurrency library supports this well. Note: If your task throws an Exception, the Future will hold this and throw a wrapping exception when you call get()

ExecutorService executor = Executors.newSingleThreadedExecutor();

Future future = executor.submit(new Callable() { 
   public String call() { 
      return "world"; 
   } 
}); 

String result = future.get();