code: public float calculateHeights() {
  		maxHeight = 0;
  		for (int k = 0; k < cells.length; ++k) {
  			PdfPCell cell = cells[k];
  			float height = 0;
  			if (cell == null) {
  				continue;
  			}
  			else {
  				height = cell.getMaxHeight();
  				if ((height > maxHeight) && (cell.getRowspan() == 1))
  					maxHeight = height;
  			}
  		}
  		calculated = true;
  		return maxHeight;
  	}
docs: Calculates the heights of each cell in the row.
  
  @return the maximum height of the row.