How to notify Consumer who is blocked at ArrayBlockingQueue.take()

Question

Suppose we have the following codes:
Producer
while (!stop) {
queue.put(sth);
Consumer
while(!stop) {
queue.take();
And suddenly, Producer is stopped while Consumer is hanging on queue.take()。The queue is empty and it will be empty forever. Then Consumer will be blocked forever. How to solve this problem?
Is Thread.interrupt() necessary?
I wonder if there is a better way.
Thank you.

Answer 1

I see.
But I am afraid it's not a good way because this can
only be used to notify Consumer. Who is going to
notify the Producer?
Therefore, I decided to use Thread.interrupt and set
a variable to end the loop.Using Thread.interrupt is, of course, always an option. But in this case I think you could also make use of BlockingQueue.poll:
//Consumer
while(!stop) {
ElementType e = queue.poll(100, TimeUnit.MILLISECONDS);
if(e == null)
  break;
// process element
}