تحديات برمجيةالتحدي السابع - حل التمرين الخامس بلغة جافا

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {

        Scanner input = new Scanner(System.in);
        int n;

        do {
            System.out.print("Enter an odd number as the number of lines: ");
            n = input.nextInt();
        }
        while (n <= 0 || n%2 == 0);
        
        for (int i = 1; i <= n; i++)
        {
            for (int j = 1; j <= n; j++)
            {
                if ((i == 1 || i == n / 2 || i == n / 2 + 2 || i == n ||
                     j == 1 || j == n / 2 || j == n / 2 + 2 || j == n)
                    && j != n /2 + 1 && i != n /2 + 1)
                {
                    System.out.print("*");
                }
                else
                {
                    System.out.print(" ");
                }
            }
            System.out.println();
        }

    }

}

Enter an odd number as the number of lines: 11
***** *****
*   * *   *
*   * *   *
*   * *   *
***** *****
           
***** *****
*   * *   *
*   * *   *
*   * *   *
***** *****