Mencari Nilai FPB

package mencari_fpb;

import java.util.Scanner;

/**
 *
 * @author Afwaans
 */

public class Mencari_fpb {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int m, n, r, q;
        String next = "y";
        
        do{
            System.out.println("-----Selamat Datang Di Program Mencari FPB-----");
        System.out.print("Masukkan Nilai m: ");
        m = sc.nextInt();
        
        System.out.print("Masukkan Nilai n: ");
        n = sc.nextInt();
        
        System.out.println("----------------------");
        if(n==0){
            System.out.println("FPB dari (" +m+","+n+ ") adalah "+ m);
        }else {
            System.out.println("m = " +m +" n = "+n);
            do{
                r = m/n;
                q = m-(r*n);
                m = n;
                n = q; 
                System.out.println("m = " +m +" n = "+n + " r = "+ q);
            }while(n > 1);
            System.out.println("----------------------");
            System.out.println("Maka FPB = " + m);
        }
           
            Scanner lagi= new Scanner(System.in);
            System.out.println("FPB Lain? ");
            System.out.println("y/t");
            next = lagi.nextLine();
        }while(next.equalsIgnoreCase("y"));
    }
}