Can you list the main implementations of queue data structures you know?

Main implementations of the queue data structure in Java:

• LinkedList — a class that implements the Queue interface, allowing the use of a queue based on a linked list.
• ArrayDeque — an array-based queue implementation with the ability to add and remove elements from both ends, more efficient than LinkedList.
• PriorityQueue — a priority queue where elements are extracted in order of priority rather than insertion order.
• ConcurrentLinkedQueue — a non-blocking thread-safe queue for multithreaded access.
• BlockingQueue (e.g., ArrayBlockingQueue, LinkedBlockingQueue) — thread-safe queues that block operations when empty or full, used in multithreaded programming.

Example of using ArrayDeque:

Queue<String> queue = new ArrayDeque<>();
queue.add("First");
queue.add("Second");
System.out.println(queue.poll()); // Will output "First"