Ace Java 2026: Rock Your 'Thinking in Java' Challenge!

Question: 1 / 510

What does the PriorityBlockingQueue use to determine the order of its elements?

Insertion order

The natural ordering of the elements

The PriorityBlockingQueue uses the natural ordering of its elements to determine the order. This means that the elements are sorted according to their natural ordering, as defined by the Comparable interface. This may be different from the order in which the elements were inserted, as shown in option A. Option C is incorrect because a Comparator is not always used to order the elements in PriorityBlockingQueue, only if one is provided at the time of queue construction. Option D is incorrect because thread access does not affect the order of the elements in the queue.

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A Comparator provided at queue construction time

The order in which threads access the queue

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