Magic Number Program In Java

import java.util.Scanner;

public class JavaMagicNumberProgram 
{
	private static void isMagicNumber(int inputNumber)
	{
		//Copy inputNumber into copyOfInputNumber
		
		int copyOfInputNumber = inputNumber;
		
		//Initialize sum to 0
		
		int sum = 0;
		
		//Until we get single digit sum, add digits of inputNumber recursively.
		
		while (sum > 9 || inputNumber > 0)
		{
			//If inputNumber is 0, 
			//then assign sum to inputNumber and 0 to sum
			
			if (inputNumber == 0)
			{
				inputNumber = sum;
				sum = 0;
			}
			
			//Extracting lastDigit from inputNumber
			
			int lastDigit = inputNumber % 10;
			
			//Adding lastDigit to sum
			
			sum = sum + lastDigit;
			
			//Removing lastDigit from inputNumber
			
			inputNumber = inputNumber / 10;
		}
		
		//If sum is 1, then given inputNumber is a magic number
		
		if (sum == 1)
		{
			System.out.println(copyOfInputNumber+" is a magic number");
		}
		else
		{
			System.out.println(copyOfInputNumber+" is not a magic number");
		}
	}
	
	public static void main(String[] args) 
	{
		Scanner sc = new Scanner(System.in);
		
		System.out.println("Enter a number :");
		
		int inputNumber = sc.nextInt();
		
		isMagicNumber(inputNumber);
		
		sc.close();
	}
}