What is an interface in Java OOP?

What is an interface in Java OOP?

An interface in Java is a reference type, similar to a class, that can contain only constants, method signatures, default methods, static methods, and nested types. It cannot contain instance fields or constructors.

How do I implement an interface in a class?

To implement an interface in a class, use the 'implements' keyword followed by the interface name. For example: class MyClass implements MyInterface { ... }.

Can a class implement multiple interfaces?

Yes, a class in Java can implement multiple interfaces, allowing for a form of multiple inheritance.

What are the benefits of using interfaces?

Interfaces provide a way to achieve abstraction and multiple inheritance in Java, allowing for more flexible and maintainable code.