Mastering Java: The Ultimate Quiz for 'Thinking in Java' 2026 - Free Java Programming Practice Questions and Study Guide

Question: 1 / 510

What difference does a PriorityQueue introduce in its behavior?

Allows random access to elements

Keeps elements sorted according to their natural order

Sorts elements in FIFO order

Positions elements based on their priority

A priority queue follows a particular order, i.e., the "priority" of the elements. The element with the highest priority is placed at the front of the queue, and so on. This is different from a regular queue, which follows the "first in, first out" (FIFO) rule. Option A is incorrect because priority queues do not allow for random access. Option B is incorrect because it does not necessarily keep elements sorted according to their natural order, only according to their priority. Option C is incorrect because, as mentioned, priority queues do not follow the FIFO rule. Therefore, option D is the correct answer as it accurately describes the unique behavior introduced by a priority queue.

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