Java ConcurrentLinkedQueue.clear() is a method in the Java ConcurrentLinkedQueue class that removes all elements from the queue. It is thread-safe, making it suitable for use in concurrent systems where all queued elements need to be removed atomically. Introduced in Java 2004 with Java 5, clear() is used to manage the lifecycle of concurrent queues in multi-threaded applications.

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