Monday, 20 January 2014

DIFFERENT WAYS TO OVERLOAD THE METHOD

There are two ways to overload the method in java

  • By changing number of arguments
  • By changing the data type



1)Example of Method Overloading by changing the no. of arguments:


In this example, we have created two overloaded methods, first sum method performs addition of two numbers and second sum method performs addition of three numbers.

  class Calculation
{  
  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 args[])
{  
  Calculation obj=new Calculation();  
  obj.sum(20,20,20);  
  obj.sum(80,80);  
  
  }  
}  

Output:
 60
 160

2)Example of Method Overloading by changing data type of argument:


In this example, we have created two overloaded methods that differs in data type. The first sum method receives two integer arguments and second sum method receives two double arguments.

class Calculation 
{  
  void sum(int a,int b){System.out.println(a+b);
}  
  void sum(double a,double b){System.out.println(a+b);
}  
  public static void main(String args[])
{  
  Calculation obj=new Calculation();  
  obj.sum(10.5,10.5);  
  obj.sum(90,90);  
  
  }  
}  

Output:
21.0
180







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