Mastering Java: The Ultimate Quiz for 'Thinking in Java'

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Want to excel in Java? Test your knowledge with our ultimate quiz based on 'Thinking in Java'. Engage with multiple-choice questions and in-depth explanations. Boost your understanding and prepare for your exam with confidence.

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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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

The correct answer is: 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.