照着视频拔下来的代码，怎么就提示这里错了呢

StringBuilder sql = new StringBuilder("select ID,COMMAND,DESCRIPTION,CONTENT from message where 1=1");

List<String> paramList = new ArrayList<String>();

if(command!=null && !"".equals(command.trim())){

sql.append("and `COMMAND`=?");

paramList.add(command);

}

if(description!=null && !"".equals(description.trim())){

sql.append("and DESCRIPTION like '%' ? '%'");

paramList.add(description);

}

PreparedStatement statement = conn.prepareStatement(sql.toString());