private void fillData() {
        try {
            HColumnDescriptor[] descriptors = table.getHTable().getTableDescriptor().getColumnFamilies();
            DefaultComboBoxModel model = new DefaultComboBoxModel();
            for(HColumnDescriptor desc : descriptors) {
                model.addElement(desc.getNameAsString());
            }
            familyComboBox.setModel(model);
        } catch (IOException ex) {
            throw new ExplorerException("Error getting column families.");
        }
    }