Question

Which of these methods deletes all the elements from invoking collection?

(a) clear()

(b) reset()

(c) delete()

(d) refresh()

I have been asked this question in an international level competition.

I'm obligated to ask this question of Collection Framework Overview in chapter java.util – The Collections Framework of Java

Answer 1

The correct choice is (a) clear()

To explain I would say: clear() method removes all the elements from invoking collection.