Sum Odd Digit

import java.util.Scanner;

public class Main {
  public static void main(String[] args) {
    Scanner in = new Scanner(System.in);
    int n = 0;
    while (n == 0) {
      System.out.print("Non-Zero digit: ");
      try {
        n = new Integer(in.next());
      }
      catch (Exception e) {
      }
      if (n <= 0) continue;
    }
    in.close();
    int harf;
    if (n % 2 == 0) harf = n / 2;
    else harf = (n + 1) / 2;
    System.out.println("Result: " + harf * harf);
  }
}