Method Overloading in Java

method overloading in Java

Method Overloading is used when we have more then one mehod with same name but perform different functionality . 

Suppose youneed to calculate area of  square  , rectangular and eclipse then you have two option :

1.    create different function for like area1 , area 2, area 3 in order to differentiate the function .

2.    second way use method overloading and use the same method name .

Second way is more efficient because it increase the readability of the program .

 Advantage of method overloading

Method overloading increase the readability of the program

How to do method overloading

1         by changing the number of arguments

2         by changing the data type

1) Method Overloading by   arguments number

class Operation{  

  void sum(int a,int b){System.out.println(a+b);}  

  void sum(int a,int b,int c)

{

System.out.println(a+b+c);

}  

  

  public static void main(String a[]){  

  Calculation obj=new Calculation();  

  obj.sum(10,10,10);  

  obj.sum(20,20);  

  

  }  

}  

2) Method Overloading by   arguments Type

class Operation{  

  void sum(int a,int b){System.out.println(a+b);}  

  void sum(int a,float b)

{

System.out.println(a+b);

}  

  

  public static void main(String a[]){  

  Calculation obj=new Calculation();  

  obj.sum(10,10);  

  obj.sum(20,10.4);  

  

  }  

}