input - 如何限制输入整数从 1 到 9

Question

我有一个用于点球大战游戏的 Java 程序，我想将 b1、b2、b3 和 s1 限制为 1-9 中的任意数字。如果输入不等于 1-9 再试一次。

 for (int i=0;i<=5;i++)

        {

            int b1, b2, b3, s1;
            int j=i+1;
            System.out.println("Enter the Numbers which you will block.... Please remember that it should be from 1-9 and nothingelse, 1 2 3 4 5 6 7 8 9");


            b1=Integer.parseInt(br.readLine()); // how to restrict this to numbers between 1 to 9
            b2=Integer.parseInt(br.readLine()); //this also
            b3=Integer.parseInt(br.readLine()); //this also

            System.out.flush();
            System.out.println("Enter The Number where you will score");
            s1=Integer.parseInt(br.readLine()); //this also

Answer 1

while(b1 > 9 || b1 < 1) {
    System.out.println("Wrong number. Try again."); 
    b1=Integer.parseInt(br.readLine());
}