짜잔비빔

public class UserDao { public void add(User user) throws ClassNotFoundException, SQLException { Class.forName("com.mysql.jdbc.Driver"); Connection connection = DriverManager.getConnection( "jdbc:mysql://localhost/springbook", "spring", "book" ); PreparedStatement ps = connection.prepareStatement( "insert into users(id, name, password) values(?,?,?)" ); ps.setString(1, user.getId()); ps.setString..