求最小公倍数/最小公约数（Java）

import java.util.Scanner;
public class Main{
    public static void main(String[] args){
        Scanner s = new Scanner(System.in);
        int n1 = s.nextInt();
        int n2 = s.nextInt();
        method2(n1,n2);
    }
    private static void method1(int n1, int n2){
        if (n1 > n2){
            int temp = n1;
            n1 = n2;
            n2 = temp;
        }
        for (int i = 1; i <= n1; i++){
            if ((n2 * i) % n1 == 0){
                System.out.println(n2*i);
                break;
            }
        }
    }

    private static void method2(int n1, int n2){
        int n3 = gcd(n1, n2);
        System.out.println(n1*n2/n3);
    }

    private static int gcd(int n1, int n2){
        if (n2 == 0) return n1;
        return gcd(n2, n1%n2);
    }
}