JDBC为什么查询语句使用StringBuilder，

StringBuilder sb=new StringBuilder();

sb.append("select * from imooc_goddess  ");

sb.append(" where user_name like ? and mobile like ? and email like ?");

PreparedStatement ptmt=conn.prepareStatement(sb.toString());

必须使用StringBuilder吗？可不可以直接像增删改类似的

String sql="" +

"insert into imooc_goddess" +

"(user_name,sex,age,birthday,email,mobile," +

"create_user,create_date,update_user,update_date,isdel)" +

"values(" +

"?,?,?,?,?,?,?,current_date(),?,current_date(),?)";

PreparedStatement ptmt=conn.prepareStatement(sql);

写成

String sql="" +

" select * from imooc_goddess " +

" where user_name like ? and mobile like ? and email like ? ";

PreparedStatement ptmt=conn.prepareStatement(sql);

有什么讲究吗？