Overriding = Changing the method behavior without changing the signature is called method overriding. Overloading = Adding method with same name and changing the parameter sequence or type of parameters are used or (Method name same but different parameter )

Difference between Overriding and Overloading

 

Overriding is the example of run-time polymorphism and

Overloading is the example of compile-time polymorphism.

 

Overriding

¦The return type must exactly match that of the overridden method.
¦The access level must not be more restrictive than that of the overridden method.
¦The access level can be less restrictive than that of the overridden method.
¦The overriding method must not throw new or broader checked exceptions than those declared by the overridden method. 
¦The overriding method can throw narrower or fewer exceptions. Just because an overridden method “takes risks” doesn’t mean that the overriding subclass’ exception takes the same risks. Bottom line: An overriding method doesn’t have to declare any exceptions that it will never throw, regardless of what the overridden method declares.
¦You cannot override a method marked final.
¦If a method can’t be inherited, you cannot override it. 

Overloaded method

¦Overloaded methods must change the argument list.
¦Overloaded methods can change the return type.
¦Overloaded methods can change the access modifier.
¦Overloaded methods can declare new or broader checked exceptions.
¦A method can be overloaded in the same class or in a subclass. 

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Overloading : Overloading means same method with different signature with in the same class is known as Overloading. Overriding:When a method in the derived class has same name and same parameter list as method in the base class,then th method in the derived class will override in the base class

when you override a method, you can change the behavior of the method for the derived class,when you overload a method, it simply involves having another method with the same name within the class

Overload example: This is no overloaded function int Add() { int a; int b; return a+b; } This is overloaded function int Add(int a, int b) { return a+b; } override example this is the first function witch i will override it virtual int Add() { int a; int b } override int Add(int a, int b) { return a + b; } in the first case the 2nd method is not derived from the first method in the second case the 2nd method is derived from the first method

Overloading : Overloading means same method with different signature with in the same class is known as Overloading Better Example for Overloading System.Console.Writeline Method In the console class there are 19 WriteLine methods are avaialble. Each method parament is different datatype and and no of parameter is different.