&gt;(
        new CheckboxCell(true, false)) {
      @Override
      public Boolean getValue(ContactInfo object) {
        // Get the value from the selection model.
        return selectionModel.isSelected(object);
      }
    };
    cellTable.addColumn(checkColumn, SafeHtmlUtils.fromSafeConstant("&lt;br/&gt;"));
    cellTable.setColumnWidth(checkColumn, 40, Unit.PX);

    // First name.
    Column&lt;ContactInfo, String&gt; firstNameColumn = new Column&lt;ContactInfo, String&gt;(
        new EditTextCell(