// IMPORTANT: class name must be same as file name.

// EG: FILE.java then

// class FILE {

// }

public class ArmstrongCheck {

public static void main(String[] args) {

String input = args[0];

int num = Integer.parseInt(input);

int original = num, sum = 0, digits = 0, temp = num;

while (temp != 0) {

temp /= 10;

digits++;

}

temp = num;

while (temp != 0) {

int digit = temp % 10;

int power = 1;

for (int i = 0; i < digits; i++) {

power *= digit;

}

sum += power;

temp /= 10;

}

if (original == sum) {

System.out.println(num + " is an Armstrong number.");

} else {

System.out.println(num + " is not an Armstrong number.");

}

}

}

//To execute run following in command line.

//java ArmstrongCheck.java <number>

//java ArmstrongCheck.java 153