Question

Which of the following is the correct syntax to declare an ArrayList in Java?

(a) ArrayList al = new ArrayList();

(b) ArrayList al = new ArrayList[];

(c) ArrayList al() = new ArrayList();

(d) ArrayList al[] = new ArrayList[];

Question is taken from Dynamic Array in section Arrays Types of Data Structures & Algorithms I

I have been asked this question in an internship interview.

Answer 1

The correct option is (a) ArrayList al = new ArrayList();

For explanation: This is a non-generic way of creating an ArrayList.