Reading an excel spreadsheet and creating a Vaadin container : Not complete

CreateContainer.java

public class CreateContainer {
  public static void main(String[] args) throws IOException {
    FileInputStream in = new FileInputStream("C:/temp/SampleData.xls");
    POIFSFileSystem fileSystem = new POIFSFileSystem(in);
    HSSFWorkbook workBook = new HSSFWorkbook(fileSystem);
    HSSFSheet sheet = workBook.getSheetAt(0);
    List<String> propertyNames = Collections.emptyList();
    IndexedContainer c = new IndexedContainer();
    for (Row row : sheet) {
      int rowIndex = row.getRowNum();
      if (rowIndex == 0) {
        propertyNames = readHeaderRow(row);
      } else {
        PropertysetItem item = createItemFromRow(propertyNames, row);
      }
    }
  }

  private static PropertysetItem createItemFromRow(List<String> propertyNames, Row row) {
    CreationHelper creationHelper = row.getSheet().getWorkbook().getCreationHelper();
    FormulaEvaluator formulaEvaluator = creationHelper.createFormulaEvaluator();
    DataFormatter df = new DataFormatter(false);


    PropertysetItem item = new PropertysetItem();
    for (Cell cell : row) {
      String cellValueAsString = df.formatCellValue(cell, formulaEvaluator);
      String propertyName = propertyNames.get(cell.getColumnIndex());
      DecimalFormat nf = new DecimalFormat();

      int cellType = cell.getCellType();

      // If it's a formula, let's deal with the cached result
      if (cellType == Cell.CELL_TYPE_FORMULA) {
        cellType = cell.getCachedFormulaResultType();
      }

      switch (cellType) {
        case Cell.CELL_TYPE_STRING:
          item.addItemProperty(propertyName, new ObjectProperty<String>(cellValueAsString, String.class));
          break;
        case Cell.CELL_TYPE_BOOLEAN:
          item.addItemProperty(propertyName, new ObjectProperty<Boolean>(cell.getBooleanCellValue(), Boolean.class));
          break;
        case Cell.CELL_TYPE_NUMERIC:
          if (DateUtil.isCellDateFormatted(cell)) {
            item.addItemProperty(propertyName, new ObjectProperty<Date>(cell.getDateCellValue(), Date.class));
          } else {
            if (cellValueAsString.startsWith("*")) {
              cellValueAsString = cellValueAsString.substring(1);
            }
            cellValueAsString = cellValueAsString.trim();
            try {
              Number n = nf.parse(cellValueAsString);
              item.addItemProperty(propertyName, new ObjectProperty(n, n.getClass()));
            } catch (ParseException e) {
              throw new RuntimeException(e);
            }
          }
      }

    }
    return item;
  }


  private static List<String> readHeaderRow(Row row) {
    List<String> propertyNames = new ArrayList<String>(row.getLastCellNum());
    for (Cell cell : row) {
      int columnIndex = cell.getColumnIndex();
      propertyNames.add(columnIndex, cell.getStringCellValue());
    }
    return propertyNames;
  }

}