Method OverLoading & OverRiding

Method Overloadding

        Methods has same name but different parameters.

bullet()

{ Action block;} 

bullet(int a)

{ Action block:}

bullet(int a,int b)

{Action block;}

Method OverRiding

       In inheritance, when the child class wants to redefine the parent class's method Overriding is used.

Methods have same name but redefined in the child class with same parameters.

Class P
{   public void property()
     { Sysout(Ca$h + Land + Gold);}
     public void marry()
      { Sysout(Subbalaxmi);}
}
Class C extends P
{ public void marry()
    { Sysout (3sha|9Tara| Sridevi);}
}

Difference between Method OverLoading and OverRiding

Method	OverLoading	OverRiding
Method Name	must be same	must be same
Argument Types	must be different(atleast Order)	must be same(including order)
Method Signature	must be different	must be same
Return Type	No Restrictions	must be same untill 1.4Version, in 1.5Version Covarient
Private, Static & Final Methods	Can be Overloaded	Cannot be Overridden
Access Modifiers	No Restrictions	Reduce X  Increase P (Cannot reduce the scope of Access Modifier)
Throws Clause	No Restrictions	of Child ->
Method Resolution	Always tak by Compiler based on reference type	Always taken by JVM based on Runtime Object
Also known as	Complie-time Polymorphism	Run Time polymorphism
	Static Polymorphism	Dynamic Polymorphism
	Early binding	Late Binding

In OverRiding the Access Specifiers can be converted(Increased) as follows:

public	Øpublic
Default	Ødefault|protected|public
protected	Øprotected|public
private	Ønot applicable