Why this simple code doesn't work?????

Question

i get error "java.sql.SQLException: Operation not allowed after ResultSet closed "
try{
            Class.forName("com.mysql.jdbc.Driver");
            Connection dbcon = DriverManager.getConnection("jdbc:mysql://localhost:3306/db?user=user&password=pasw&useUnicode=true&characterEncoding=utf-8");
            String query = "SELECT * FROM  data where parent_id='xxsds^1'";
            Statement statement = dbcon.createStatement();
            ResultSet rs = statement.executeQuery(query);
            while(rs.next())
                String name = rs.getString("name");
                String query2 = "SELECT * FROM  data where parent_id='"+name+"'";
                statement.execute(query2);
                ResultSet rs2 = statement.getResultSet();
                while(rs2.next())
                    String name1 = rs2.getString("name");
        catch(Exception ex){out.println(ex);}thanks a lot

Answer 1

You need to use two separate statments if you're going to interleave the queries like that. I'd think you could get by with a single query and a join though, but I didn't actually look at what your queries are doing.
Also, you should use PreparedStatement, a "?" parameter, and PS's setString method, rather than a plain old Statement where you have to maually handle string quoting.