code: public final Object getCell(int rowIdx, int colIdx)
    {
      if (resultData != null)
      {
        return extractCell(resultData, rowIdx, colIdx);
      }
      return data.get(colCount * rowIdx + colIdx);
    }
docs: Creates a String object for the given cell
  
  @param rowIdx zero based row
  @param colIdx zero based column
  @return String