Java Queue.poll() is a method in the Java Queue interface that retrieves and removes the head of the queue, or returns null if the queue is empty. It is commonly used in scenarios such as managing task queues or implementing producer-consumer patterns. Introduced in Java 1995 with Java 1.0, poll() is a basic method for efficiently removing elements from a queue while managing empty queues gracefully.

https://docs.oracle.com/javase/8/docs/api/java/util/Queue.html