无法识别出while循环之外的变量

Question

我正在做一个猜数字的游戏，并且我正在循环测试是否为int变量，但出于循环，它无法识别变量（抱歉，我的英语不好）

 option = 1;

    while (option == 1) {
        System.out.print("from:");
        Scanner input = new Scanner(System.in);

        try {
            int min = input.nextInt();
            option ++;

        }
        catch (Exception e) {
            System.out.println("only numbers...");
            TimeUnit.SECONDS.sleep(2);

        }

    }
    while (option == 2) {
        System.out.print("to:");
        Scanner input = new Scanner(System.in);

        try {
            int max = input.nextInt();
            option ++;

        }
        catch (Exception e) {
            System.out.println("only numbers...");
            TimeUnit.SECONDS.sleep(2);

        }

        }

    while (option == 3) {
        System.out.print("number of lives:");
        Scanner input = new Scanner(System.in);

        try {
            int lives = input.nextInt();
            option ++;

        }
        catch (Exception e) {
            System.out.println("only numbers...");
            TimeUnit.SECONDS.sleep(2);

        }
    }

    int number = (int) (Math.random()* max + min);

at“ int number =（int）（Math.random（）* max + min）;”说“ min无法解析为变量
-无法将max解析为变量”