Check whether the given number is Armstrong number or not Example Java Program

Definition

Check whether the given number is Armstrong number or not Example Program

import java.util.Scanner;

public class ArmstrongNumberCheck {
	public static boolean isArmstrong(int input) {
		String str = input + "";
		int size = str.length();
		int in = input;
		int sum = 0;
		while (in != 0) {
			int lastDigit = in % 10;
			sum = sum + (int) Math.pow(lastDigit,size);
			in = in / 10;
		}
		if (sum == input) {
			return true;
		} 
		else {
			return false;
		}
	}
	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		System.out.print("Enter a number: ");
		int inputNumber = in.nextInt();
		boolean result = isArmstrong(inputNumber);
		if (result) {
			System.out.println(inputNumber + " is an Armstrong number");
		} 
		else {
			System.out.println(inputNumber + " is not an Armstrong number");
		}
	}
}

Sample Output

Output is:
Enter a number: 5678
5678 is not an Armstrong number