What is BlockingQueue in Java?

A BlockingQueue in Java is a type of queue that supports operations that wait for the queue to become non-empty when retrieving an element and wait for space to become available in the queue when storing an element. This makes it particularly useful for producer-consumer scenarios where threads are producing and consuming data concurrently.

BlockingQueue is part of the java.util.concurrent package and provides several implementations such as ArrayBlockingQueue, LinkedBlockingQueue, and PriorityBlockingQueue, enabling developers to choose an appropriate implementation based on their specific requirements.