24 给一个不多于5位的正整数

题目:给一个不多于5位的正整数.
 要求一:求它是几位数
 要求二:逆序打印出各位数字

   public class _024PrintAFigure {

    public static void main(String[] args) {
        while (true) {
            printAFigure();
        }
    }

    private static void printAFigure() {
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入不多于五位的正整数:");
        long a = scanner.nextLong();
        String string = Long.toString(a);
        char[] c = string.toCharArray();
        int j = c.length;
        if (j <= 5) {
            System.out.println(a + "是一个" + j + "位数.");
            System.out.println("按逆序输出是:");
            for (int i = j - 1; i >= 0; i--) {
                System.out.print(c[i] + "  ");
            }
            System.out.println();
        } else {
            System.out.println("超出了5位数");
        }
    }

}