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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.

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