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Java, ConcurrentLinkedDeque vs ConcurrentLinkedQueue - difference?

Api links for ConcurrentLinkedDeque and ConcurrentLinkedQueue :

http://docs.oracle.com/javase/7/docs/api/java/util/concurrent/ConcurrentLinkedDeque.html

http://docs.oracle.com/javase/7/docs/api/java/util/concurrent/ConcurrentLinkedQueue.html

What is the difference between the two?

First, DeQueue has a lot more methods, but what is the fundamental difference between the two?

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2 answers

Both collections are thread safe. The difference is that a ConcurrentLinkedDeque implements Deque , which supports adding and removing elements from both ends (e.g. addFirst and addLast ), while ConcurrentLinkedQueue implements Queue , which allows you to insert at one end, called the tail of the queue, and delete at the other end, called the head of the queue.

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Dequeue allows inserts and deletes from both ends of the queue, so there are many methods.

While the queue is not working.

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Source: https://habr.com/ru/post/981761/

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