Polymorphism

polymorpihsm ->one name, many form.

have 2 types : 1. Compile time, 2 Run time

1 compile time: also called overloading
have 3 types. 1. Constructor overloading(i.e.,with same constructor name and different no of arguments or different datat types or both ) 2 Function overloading(i.e.,with same function name and different no of arguments or different datat types or both)

3. operator overloading: exaample : String s = "James";

s = s + "Bond";

Runtime poly: is achieved by overridding parent class method:

This is called Dynamic method dispatch.


1. function overloading,

2. Runtime polymorphism --Using Interface reference,

EX:
interface name I ,abstract Method();
implimenting classes A,B

ref I;
objA= new A();
objB= new B();

runtime
objA=I

objA.Method();

objB=I;
objB.Method();

Polymorphism comes in to action with dynamic binding, so it's important to identify which object to have which behavior. (VB.net and C# both are default to dynamic binding)