Inheritance and Generics in Interfaces

Learn how interfaces can inherit from one another and how to utilize generics to create flexible and reusable interface contracts.

Classes implement interfaces, but interfaces can also derive from other interfaces. This allows us to build richer contracts by extending existing ones. Unlike classes, interfaces cannot be marked as sealed, meaning there is no way to prevent an interface from being inherited.

When a class implements an interface that inherits from others, it must implement all members declared in the entire inheritance chain.