Interface | What is Interface in JAVA | Why we use Interface

What is Interface?

• Interface in JAVA is bluprint of a class. It as static and abstract methods.

• Interface supports 100% abstraction and thus all the methods in interface class are be default abstract

• Multiple inheritance can be achieved using the interface as interface has unimplemented methods and thus we can use them as per our needs
• We can not create an object of interface and thus it support one more OOPs concept - Inheritance

How to achieved Inheritance in Interface?

• Class A implements Interface B
• Interface C extends Interface D