Why do we use interfaces in Java?

An interface is a reference type in Java. It is similar to a class. It is a collection of abstract methods. A class implements AN interface, thereby inheritable the abstract ways of the interface.

An interface is a specification or a contract if a class implements an interface it indicates that class provides all the behaviors specified in that interface. In a way, it establishes communication between two objects.
Since Java does not support the concept multiple inheritance, an interface is used to achieve multiple inheritance.

Nikitha N

Published on 10-Jan-2018 12:30:39

• Related Questions & Answers
• Why do we use random.seed() in Python?
• Why do we use jQuery over JavaScript?
• Why do we use JSON.stringify() method in jQuery?
• Why do we use DOCTYPES in HTML document?
• Why do we use modifiers in C/C++?
• Why do we use restrict qualifier in C++?
• Why do we use const qualifier in C++?
• Why do we use comma operator in C#?
• Why do we use internal keyword in C#?
• Why do we use "use strict" in JavaScript?
• In JavaScript Why do we use "use strict"?
• Why are interfaces introduced in Java?
• Why do we need generics in Java?
• Why do we use head tag in HTML Page?
• Why do we use reset button in HTML forms?