java - 尝试让用户输入介于两个值之间

Question

我试图提示用户输入 1 到 12 之间的值。如果他们输入超出此范围的值 (EX -15)，我需要继续提示，直到他们输入 1-12 之间的值。此外，当用户输入指定范围 (1-12) 之间的值时，它需要打印一个时间表，其中包含整数 1 乘以输入数字的结果。到目前为止，我相信我的布局是正确的，但我知道我遗漏了一些东西，但无法弄清楚这里的代码是什么:

package times_Table;

import java.util.Scanner;

public class Times_Table {

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);
        final int TOTAL = 5;

        System.out.print("Enter an integer between 1 and 12:");
        int input = sc.nextInt();
        int numbers = input;

        //If the input is out of the range 1-12 keep going
        //If the input is in the range of 1-12 stop

        //Need to find a way to keep looping if the integer inputed is     out of the range 1-12
        while (numbers>1 && numbers<12) {
            if (numbers<1 && numbers>12) {
                for (int i = 1; i <= TOTAL; i++) {
                    for (int j = 1; j<=TOTAL; j++) {
                        System.out.print(i*j + "\t");
                    }
                    System.out.println();
                }
            } else {
                if (numbers < 1 && numbers > 12) {
                    System.out.print("Enter an integer between 1 and 12:");
                }
            }
        }
    }
}

Answer 1

像这样更改 while:

while (keepGoing) {
    while (numbers < 1 || numbers > 12) {
        System.out.print("Enter an integer between 1 and 12:");
        numbers = sc.nextInt();
    }

    for (int i = 1; i <= numbers; i++) {
        for (int j = 1; j<=numbers; j++) {
            System.out.print(i*j + "\t");
        }
        System.out.println();
    }
}