we can achieve polymorphism using interfaces

with out overloading & overriding.

in interface we can one method  and implement this method in two different classes.

we can refer the interface name and store the class objects .

we can call the method depending on object creation of class.

interface xyz

{

public void print();

}

class a:xyz

{

public void print()

{

console.writeline("method a");

}

}

class b:xyz

{

public void print()

{

console .writeline("method b");

}

}

class test

{

public static void Main()

{

xyz obj;        //refer the interface

obj=new a();

obj.print();// o/p :method a

obj=new b();

obj.print();//o/p: method b

}

}