Write a program in java to check given number is Armstrong or not ?

class ArmstrongNumber

{

          public static void main(String[] args)

          {

                   int num=1563,sum=0,rem=0;

                   int temp=num;

                   while(num>0)

                   {

                             rem=num%10;

                             num=num/10;

                             sum+=(rem*rem*rem);

                   }

                   System.out.println(temp==sum?"armstrong":"not armstrong");

          }

}

Output