최대공약수, 최소공배수 (method)

import java.io.*;
public class ExerciseCh5_9_2 {
	static int method(int x, int y) {
		while (x != y) {
			if (x > y) x -= y;
			else y -= x;
		}
		return x;
	}
	public static void main(String[] args) throws java.io.IOException{
		BufferedReader input = new BufferedReader(new InputStreamReader(System.in));
		int i, j;
		int a, b;
		
		System.out.print("Enter first number : ");
		i = Integer.parseInt(input.readLine());
		System.out.print("Enter second number : ");
		j = Integer.parseInt(input.readLine());
		a = method(i, j);
		System.out.println("a = " + a);
		b = (i/a) * (j/a) * a;
		System.out.println("b = " + b);
	}
}