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

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Mastering Java: The Ultimate Quiz for 'Thinking in Java'. Dive deep into Java with multiple-choice questions. Challenge yourself with quiz questions designed to test and improve your understanding of the 'Thinking in Java' book. Get ready for your exam!

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What is true about Maps in relation to the Collection interface?

Maps are a type of Collection
Maps cannot use Collection interfaces
Maps use Collection to store elements
Maps directly extend Collection

The correct answer is: Maps use Collection to store elements

Maps in Java are a specialized type of Collection that store key-value pairs. While they do implement the Collection interface, they do so indirectly through another interface called Map, rather than directly. Therefore, they are not a type of Collection, but they do use Collection methods to store and manipulate their elements. Option A is incorrect because while maps are related to the Collection interface, they are not a type of Collection. Option B is not accurate because Maps do in fact use Collection interfaces. Option D is incorrect because it directly states that Maps extend Collection, which is not true.