How to find the GCD in java?

package gcd;

import java.util.Scanner; 

public class Gcd
{
    public static void main (String []args)
    {
        int Number1; 
        int Number2;
        
        
        Scanner input = new Scanner(System.in);
        
        System.out.println("Welcome to the GCD Program!");
        System.out.println("Enter two numbers and ill will give you the GCD");
        System.out.println("Enter Number1:");
        
        Number1 = input.nextInt();
        
        System.out.println("Enter Number 2");
        
        Number2 = input.nextInt();
        
        int myGCD = gcdFunction(Number1, Number2);
        
        System.out.println("Your GCD is: " + myGCD);
        
                
             
    } // end of main
    /****Method 1: GCD function*******/
    public static int gcdFunction(int a, int b)
    {
        if (a == 0)
        {
            return b;
        }
        while (b != 0) 
        {
            if (a > b)
            {
                a = a - b;
            }
            else
            {
            b = b - a;
            }
        } // end of the while loop 
        
        return a;
    } //end of method
} // end of Gcd class