兔子的个数-java

public class FirstRabbit {
    public static void main(String[] args) {
        Scanner inputScanner = new Scanner(System.in);
        long f, f1 = 1l, f2 = 1l;
        System.out.println("请输入你要查询你个月的情况");
        int month = inputScanner.nextInt();
        for (int i = 3; i <= month; i++) {
            f = f2;
            f2 = f1 + f2;
            f1 = f;
            System.out.println("第" + i + "个月有" + f2 + "只兔子");
        }
    }
}