C #(12. Interface)

12. Interface

The interfaces in C # are similar to those in Java, but they are more flexible. Class can explicitly implement an interface at will:

Public interface ITeller

{

Void Next ();

}

Public interface IIterator

{

Void Next ();

}

Public class Clark: ITeller, IIterator

{

Void ITeller. Next (){}

Void IIterator. Next (){}

}

This brings two benefits to the class that implements the interface. First, a class can implement several interfaces without worrying about name conflicts. Second, if a method is useless to a general user, the class can hide the method. To call an explicit method, you need to convert the class [: Should be an object] shape into an interface:

Clark clark = new Clark ();

(ITeller) clark). Next ();