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

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Prepare for your Java exam with our ultimate quiz based on 'Thinking in Java'. Engage with expertly crafted questions that enhance your learning process. Perfect for Java enthusiasts looking to solidify their knowledge!

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 is the purpose of the Iterator interface?

To iterate in reverse order
To add elements to a collection
To allow movement through a collection
To sort elements in a collection

The correct answer is: To allow movement through a collection

The purpose of the Iterator interface is to allow movement through a collection, which means it allows us to access and traverse elements in a sequential manner. Option A is incorrect because the Iterator interface only allows movement in one direction, which is forward. Option B is incorrect because the add() method is not a part of the Iterator interface. If we want to add elements to a collection, we can use methods specific to that collection such as add() for ArrayList and put() for HashMap. Option D is incorrect because the Iterator interface is not responsible for sorting elements in a collection. Instead, we can use the Collections class for sorting collections.