Handling Exceptions for ThreadPoolExecutor

Question

I have the following code snippet that basically scans through the list of task that needs to be executed and each task is then given to the executor for execution.

Answer 1

When you submit a task to the executor, it returns you a FutureTask instance.

FutureTask.get() will re-throw any exception thrown by the task as an ExecutorException.

So when you iterate through the List and call get on each, catch ExecutorException and invoke an orderly shutdown.