Can you implement multiple interfaces

Privacy policy. Skip to main content. This browser is no longer supported. Download Microsoft Edge More info. Nirmal Dalmia Nirmal Dalmia 2 2 silver badges 12 12 bronze badges. Actually, an interface can extend any number of interfaces: docs. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password.

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Stack Overflow works best with JavaScript enabled. Accept all cookies Customize settings. Object Interfaces Object interfaces allow you to create code which specifies which methods a class must implement, without having to define how these methods are implemented.

In practice, interfaces serve two complementary purposes: To allow developers to create objects of different classes that may be used interchangeably because they implement the same interface or interfaces. A common example is multiple database access services, multiple payment gateways, or different caching strategies. Different implementations may be swapped out without requiring any changes to the code that uses them. To allow a function or method to accept and operate on a parameter that conforms to an interface, while not caring what else the object may do or how it is implemented.

These interfaces are often named like Iterable , Cacheable , Renderable , or so on to describe the significance of the behavior. Warning A class can implement two interfaces which define a method with the same name, only if the method declaration in both interfaces is identical. Warning A class that implements an interface may use a different name for its parameters than the interface.

Constants It's possible for interfaces to have constants. Yes, you can do it. A class can implement multiple interfaces. However, a class can only extend a single class. Answer is: Yes.