Can a superclass implement an interface?

Can a superclass implement an interface?

Thus, if a class already has a different superclass, it can implement an interface, but it cannot extend another abstract class. Therefore interfaces are a more flexible mechanism for exposing a common interface. If you need to separate an interface from its implementation, use an interface.

Can a class implement an interface and extend a class at the same time?

Since an interface is not having the implementation of the methods, a class can implement any number of interfaces at a time. Note: A class can extend a class and can implement any number of interfaces simultaneously. Note: An interface can extend any number of interfaces at a time.

What is the difference between superclass and interface?

As verbs the difference between interface and superclass is that interface is to construct an interface for, to connect through an interface while superclass is (transitive|computing|object-oriented programming) to create a superclass of.

Can you implement a class?

To declare a class that implements an interface, you include an implements clause in the class declaration. Your class can implement more than one interface, so the implements keyword is followed by a comma-separated list of the interfaces implemented by the class.

How is an explicit interface implemented in C #?

Explicit Interface Implementation (C# Programming Guide) If a class implements two interfaces that contain a member with the same signature, then implementing that member on the class will cause both interfaces to use that member as their implementation.

Do you have to implement the same interface for both interfaces?

But you might not want the same implementation to be called for both interfaces. To call a different implementation depending on which interface is in use, you can implement an interface member explicitly. An explicit interface implementation is a class member that is only called through the specified interface.

How to call an explicitly implemented interface-method on the base?

Unfortunately, it isn’t possible. Not even with a helper method. The helper method has the same problems as your second attempt: this is of type B, even in the base class and will call the implementation of M in B: The only workaround would be a helper method in A that is used in A ‘s implementation of M:

Which is an example of an interface in C #?

For example: C#. interface ILeft { int P { get;} } interface IRight { int P(); } class Middle : ILeft, IRight { public int P() { return 0; } int ILeft.P { get { return 0; } } } An explicit interface implementation doesn’t have an access modifier since it isn’t accessible as a member of the type it’s defined in.