Java ConcurrentLinkedDeque.offerLast() is a method in the Java ConcurrentLinkedDeque class that inserts an element at the end of the deque. It is a thread-safe operation, making it suitable for concurrent applications where elements need to be safely added to the deque's tail. Introduced in Java 2004 with Java 5, offerLast() is commonly used in multi-threaded systems requiring FIFO and thread-safe data structures.

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