java求最大公約數，和最小公倍數

import java.util.Scanner;

public class Test {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int m = sc.nextInt();
		int n = sc.nextInt();
		
		if(m<n) {
			int temp = m;
			m = n;
			n = temp;
		}

		int t = gy(m,n);
		System.out.println("它們最大公約數為：" + t);
		System.out.println("它們最小公倍數為：" + m * n / t);
	}
//		求最大公約數
	private static int gy(int m, int n) {
		if(m%n == 0) return n;
		return gy(n,m%n);
	}
}