OVERLOADING

OVERLOADING :

Using any entity in more than a single way in programming is called overloading . Overloading is possible in c++ as well as JAVA .

In general , every programming language provides  two types of overloading :

OPERATOR OVERLOADING :

Operator overloading is the criteria of using the same method name for different operations . An operator for different data types give output accordingly . Consider the following example :

In JAVA , operator overloading is not possible but it uses internal operator overloading .

It means that user cannot defined operator overloading , but for some cases operators are already overloaded in JAVA . They are already defined in in-built classes.

METHODS OVERLOADING :

In method overloading , more than one methods have same name but they are used for different purposes .
Name of methods is name but they perform different operations and are used in different situations .

Defining and declaring methods with same name :

In method overloading name is same but number of arguments or type of arguments must be different.

Note that method overloading does not depend upon return type of method.

A program to illustrate method overloading is given :

class Mover

{

int a,b;

double d,c ;

void get(int a)

{

this.a=a;

b=a;

}

void get(int a,int b)

{

this.a=a;

this.b=b;

}

int area()

{

return(a*b);

}

public static void main(String args[])

{

Mover obj = new Mover();

obj.get(10);

System.out.println("Area of square "+obj.area());

obj.get(15,30);

System.out.println("Area of rectangle "+obj.area());

}

}

The output of this program will appear like this :

Posted in: Overloading methods