DIFFERENCE BETWEEN OVERLOADING AND OVERRIDING IN JAVA

Property	Overloading	Overriding
Method name	Must be same	Must be same
Method argument	Must be different (at least order)	Must be same (including order)
Method signature	Must be different	Must be same
Return type	No restrictions	Must be same until 1.4 version, but from 1.5v onwards co-variant return types are also allowed.
Private, static, final methods	Can be overloaded	Can’t be overloaded
Access modifiers	No restrictions	We can’t reduce the scope but we can increase
Throws classes	No restrictions	If child class throws any checked exception compulsorily parent class method should throw the same checked exception or its parent; but there is no restriction for unchecked exception.
Method resolution	Always taken care by compiler based on reference type.	Always taken care by jvm based on runtime object.
Also known as	Static polymorphism or compile time polymorphism or early binding	Dynamic polymorphism or runtime polymorphism or late binding