Question

Which of the following is the correct way of implementing an interface A by class B?

(a) class B extends A{}

(b) class B implements A{}

(c) class B imports A{}

(d) None of the mentioned

The question was posed to me by my school principal while I was bunking the class.

The doubt is from Interfaces topic in portion Interfaces & Packages of Java

Answer 1

The correct answer is (b) class B implements A{}

Easiest explanation: Concrete class implements an interface. They can be instantiated.