Why use interface?

Question

why we use interface

Pradeep Sahoo · Answer

Interface is a contract  it contains only method definition. It is easy to extend  multiple client implementation depending on the business rules . It helps us to achieve a loosely coupled solutions or design like a plug and play . Interface helps us in unit testing using mocking . Interface is used to support various design rule like dependency injection  inversion of control etc . Hope this helps you .

Tejas Trivedi · Answer

Hi Akshay The purpose of the interface in design is to establish the abstract contract between the provider and implementer or consumer. The major significance of the interface is it provides loose coupling component based programming easy to maintain makes code more reusable and more scalable. So interface makes developer's life much easier and application be much cleaner maintainable and extensible. Hope this will help you to understand the concept. Feel free to write if you have any query on this. Don't forget to mark as answer if this helps.

Saddamhusen Uadanwala · Answer

Purposes to use Interfaces Create loosely coupled software Allow for pluggable software Testability Allow different objects to interact easily Hide implementation details of classes from each other Facilitate reuse of software and many more..