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 does the method 'add()' do in the context of an ArrayList?

Increments the size of the ArrayList by one
Inserts a new element into the ArrayList
Updates an existing element in the ArrayList
Deletes an element from the ArrayList

The correct answer is: Inserts a new element into the ArrayList

The method 'add()' in the context of an ArrayList inserts a new element into the ArrayList. This adds the element to the end of the list, increasing its size. Option A is incorrect because the size of an ArrayList is not incremented by calling 'add()', but rather by adding elements to the list. Option C is incorrect because 'add()' does not update existing elements, but rather adds new ones. Option D is also incorrect because 'add()' does not delete elements, but rather adds them.