ble = new CellTable&lt;ContactInfo&gt;(10,
        ContactInfo.KEY_PROVIDER);

    // Add the Name column.
    table.addColumn(new Column&lt;ContactInfo, String&gt;(new TextCell()) {
      @Override
      public String getValue(ContactInfo object) {
        return object.getFullName();
      }
    }, constants.cwCellValidationColumnName());

    // Add an editable address column.
    final ValidatableInputCell addressCell = new ValidatableInputCell(
        constants.cwCellValidationError());
    Column&lt;