Question

How do you instantiate an array in Java?

(a) int arr[] = new int(3);

(b) int arr[];

(c) int arr[] = new int[3];

(d) int arr() = new int(3);

This intriguing question comes from Array and Array Operations in portion Abstract Data Types of Data Structures & Algorithms I

This question was addressed to me at a job interview.

Answer 1

Correct answer is (c) int arr[] = new int[3];

For explanation: Note that int arr[]; is declaration whereas int arr[] = new int[3]; is to instantiate an array.