Q) What do you know about var args?

A)

->for a method if we declare a variable argument type as parameter, any no.of arguments we can supply during that method class. This concept is known as var arg concept.

-> var arg type parameter is created as fallows

datatype … variablename

class varargtest {

       static int add (int ...a)

       {

              int sum=0;

              for(int i=0;i<a.length;i++)

              {

                     sum=sum+a[i];

              }

              return sum;

       }

       public static void main(String[] args) {

              System.out.println("the sum of 2 numbers : "+add(10,70));

              System.out.println("the sum of 2 numbers : "+add(110,60,40));

       }

}

Output:
the sum of 2 numbers : 80

the sum of 2 numbers : 210

->A method can’t have more than one variable arguments type parameters.

->If a method has normal parameters and var arg parameters, var arg type should be the last parameters.