Java Program to find Armstrong numbers - Example Code

import java.util.Scanner;

/**
 * Simple Java Program to check or find if a number is Armstrong number or not.
 * An Armstrong number of three digit is a number whose sum of cubes of its digit is equal
 * to its number. For example 153 is an Armstrong number of 3 digit because 1^3+5^3+3^3 or   1+125+27=153
 * @author Javin
 */
public class ArmstrongTest{

   
    public static void main(String args[]) {
   
        //input number to check if its Armstrong number
        System.out.println("Please enter a 3 digit number to find if its an Armstrong number:");
        int number = new Scanner(System.in).nextInt();
     
        //printing result
        if(isArmStrong(number)){
            System.out.println("Number : " + number + " is an Armstrong number");
        }else{
            System.out.println("Number : " + number + " is not an Armstrong number");
        }

   
    }

    /*
     * @return true if number is Armstrong number or return false
     */
    private static boolean isArmStrong(int number) {
        int result = 0;
        int orig = number;
        while(number != 0){
            int remainder = number%10;
            result = result + remainder*remainder*remainder;
            number = number/10;
        }
        //number is Armstrong return true
        if(orig == result){
            return true;
        }
     
        return false;
    }
 
}

Output:
Please enter a 3 digit number to find if its an Armstrong number:
153
Number : 153 is an Armstrong number
Please enter a 3 digit number to find if its an Armstrong number:
153
Number : 153 is an Armstrong number
Please enter a 3 digit number to find if its an Armstrong number:
371
Number : 371 is an Armstrong number