Armstrong Number

public class Armstrong {
    public static void main(String[] args) {
        int n = 153, sum = 0, digits = 3, tmp = n;
        while (tmp > 0) {
            int rem = tmp % 10;
            sum += (int) Math.pow(rem, digits);
            tmp /= 10;
        }
        System.out.println(n + " is Armstrong: " + (sum == n));
    }
}