Catching thread exceptions from Java ExecutorService

Question

I\'m working on a software development framework for parallel computing JavaSeis.org. I need a robust mechanism for reporting thread exceptions. During development, knowing

Answer 1

To Handling exceptions in ExecutorService you have to take the advantage of Callable and Future.

Callable is similar to Runnable and both are functional interface but run() of Runnable doesn't throws exception and the return type is void where as call() of Callable returns a generics and throws exception.

Java-8 way:

ExecuterService executor = null; 
Future future = null;

Callable yourTask = () -> {
    //your implementation here();
    //your implementation here();
};

try 
   {
        executor = Executors.newCachedThreadPool();
        future = executor.submit(yourTask );
        Integer result = future.get();
        System.out.println(result);
   }
   catch (ExecutionException | TimeoutException | InterruptedException e) 
   {
    // TODO: handle exception
   }
   finally 
   {
       executer.shutdown();
   }