java - Signaling for exception from Callable thread without blocking in main thread

Question

This is a followup for my previous question enter link description here

Now the problem is that I can't "block" (Future.get) in my main thread because it must continue with its work, but I do need the threads to signal it some how...

Answer 1

为什么不直接打电话Future.isDone()从你的主线程定期调用，如果完成，Future.get()结果呢？这将引发原始异常。