@Override protected Component buildExampleComponent() { List<String> countries = CountryNames.getCountries(); CheckComboBox ccb = new CheckComboBox(); ListCheckModel model = ccb.getModel(); for (String color : countries) { model.addElement(color); } BatchSelection bs = new BatchSelection.CheckBox(); EmbeddedComponent comp = new EmbeddedComponent(bs, Anchor.NORTH); ccb.setEmbeddedComponent(comp); JPanel panel = new JPanel(); panel.setOpaque(false); panel.add(ccb); return panel; }