An interface is not a class.
It is an entity that is defined by the word Interface. An interface has no
implementation; it only has the signature or in other words, just the
definition of the methods without the body.
Defining an Interface
Differences between Interfaces and Abstract
*An Interface cannot implement methods.
*An abstract class can implement methods.
*An Interface can only inherit from another Interface.
*An abstract class can inherit from a class and one or more interfaces.
*An Interface cannot contain fields.
*An abstract class can contain fields.
*An Interface can contain property definitions.
*An abstract class can implement a property.
*An Interface cannot contain constructors or destructors.
*An abstract class can contain constructors or destructors.
*An Interface can be inherited from by structures.
*An abstract class cannot be inherited from by structures.
*An Interface can support multiple inheritance.
*An abstract class cannot support multiple inheritance.
class Program : myInterface //Implement
void Main(string args)
p1 = new Program();
p1.display(); //call the method
//Give funtionality to method who declared in
In this example, I have created a interface myInterface using interface keyword and
define a method named display().Class
Program inherits the myInterface and
give full definition to method display()
and call by the Program class object p1.