如图所示 刚学没多久不会处理

Question

想让数据库中列表的三个全显示出来怎么办

Answer 1

List<String> list = new ArrayList<>();
        while(rs.next()){
            String name = rs.getString("name");
            list.add(name);
        }
        String[] names = new String[list.size()];
        list.toArray(names);
        com_idDep.setModel(new DefaultComboBoxModel(names));