// Non-GUI program to display a diamond pattern of stars.
// Written 2/2008 by Wayne Pollock, Tampa Florida USA.

import static java.lang.Math.abs;

class Diamond
{
   static final int WIDTH = 7;  // How many stars in middle (fattest) row.
   static final int CENTER = 5; // Column index for vertical center axis.

   public static void main ( String [] args )
   {
      final int range = WIDTH / 2;
      for ( int i = -range; i <= range; ++i )
      {
         int numStars = WIDTH - abs(i*2);
         drawChar( ' ', CENTER - numStars/2 ); // Draw leading spaces.
         drawChar( '*', numStars );            // Draw a row of stars.
         System.out.println();                 // Add a newline.
      }
   }

   // Implementation method to display a "run" of some character:
   private static void drawChar ( char ch, int numToDraw )
   {
      for ( int i = 0; i < numToDraw; ++i )
        System.out.print( ch );  // Not println!
   }
}