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 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.