Creating an hourglass using asterisk(*).

// import scanner class

import java.util.Scanner;
// create a class

public class HourGlass
{
  public static void main (String args[])
  {
    Scanner s = new Scanner(System.in);
    int row, column, star;
    System.out.println("enter number");
    int number = s.nextInt();

    for(row = 1;row <= number;row ++)
       {
          for(column = 1;column <= row;column ++)
             {
              System.out.print(" ");
             }
          for(star = number;star >= row;star --)
             {
              System.out.print("* ");
             }
         System.out.println();
       }

    for(row = 1;row <= number;row ++)
       {
         for(column = number;column >= row;column --)
             {
              System.out.print(" ");
             }
         for(star = 1;star <= row;star ++)
            {
             System.out.print("* ");
            }
         System.out.println();
       }
   }
}