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

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Dive into the depths of Java with our quiz based on "Thinking in Java, Fourth Edition" by Bruce Eckel. Test your knowledge, solidify concepts, and prepare for certification with challenging questions and insightful feedback.

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!

Practice this question and more.

What does the Map interface allow you to do?

Maintain a list of unique elements
Map keys to values
Store elements in insertion order
Ensure no duplicate keys are present

The correct answer is: Map keys to values

A map is a data structure that allows for the mapping of unique keys to corresponding values, allowing for efficient access to and retrieval of data. Option A is incorrect because maintaining a list of unique elements is the purpose of the Set interface, not the Map interface. Option C is incorrect because the Map interface does not guarantee insertion order, unlike the List interface. Option D is also incorrect because the Map interface does not have any built-in mechanism for preventing duplicate keys, though it is possible to manually implement this functionality. Overall, the Map interface is specifically designed for the mapping of keys to values, making option B the correct answer.