hourglass

package maricka.kolokolova;

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub

		Scanner sc = new Scanner(System.in);
		System.out.println("Input hourglass width:");

		int w;
		int ch;
		w = sc.nextInt();
		ch = w % 2;
		if (ch != 0) {

			int midl;
			midl = w / 2 + 1;
			for (int i = 1; i <= w; i++) {
				for (int j = 1; j <= w; j++) {
					if (i <= midl) {
						if (j <= i - 1 || j > w - i + 1) {
							System.out.print(" ");
						} else {
							System.out.print("*");
						}
					} else {
						if (j < w - i + 1 || j > i) {
							System.out.print(" ");
						} else {
							System.out.print("*");
						}
					}
				}
				System.out.println("");
			}
		} else {
			System.out.println("Your number is not correct. Please try one more time.");
		}
		sc.close();
	}
}