What is a blocking queue in java

This article mainly introduces what is the blocking queue in java, which has a certain reference value. Interested friends can refer to it. I hope you will gain a lot after reading this article.

What is a blocking queue?

The characteristic of java.util.concurrent.BlockingQueue is that when the queue is empty, the operation of fetching or deleting elements from the queue will be blocked, or when the queue is full, the operation of adding elements to the queue will be blocked.

The blocking queue does not accept null values, and when you try to add null values to the queue, it throws a NullPointerException.

The implementation of blocking queues is thread-safe, all query methods are atomic and use internal locks or other forms of concurrency control.

The BlockingQueue interface is part of the java collections framework, which is mainly used to implement producer-consumer problems.

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