Re: how to resolve org.postgresql.util.PSQLException: ResultSet notpositioned properly, perhaps you need to call next.

Here's the entire code again:

String[] subjectNames = request.getParameterValues("txtsubjects");
> > String zipcode = request.getParameter("location");
> > List<String> subjList = new ArrayList<String>(Arrays.asList(subjectNames));
> > List<tutor> myList = new ArrayList<>();
> > ArrayList<String> subList = new ArrayList<>();
> > CopyOnWriteArrayList<String>newSub = new CopyOnWriteArrayList<String>();
> > tutor t = new tutor();
> >
> >
> > String sql1 = "select t.tutor_contact_no, t.zipcode, t.tutor_id, t2.subject_name FROM s_tutor t JOIN tutor_subject t2 ON t.tutor_id = t2.tutor_id where t.zipcode = ? And t2.subject_name = Any((?))";
> >
> > PreparedStatement ps2 = connection.prepareStatement(sql1);
> > ps2.setString(1, zipcode);
> > for (int i = 0; i < subjectNames.length; i++) {
> > Array array = connection.createArrayOf("text", subjList.toArray());
> > ps2.setArray(2, array);
> > }
> > ResultSet rs = ps2.executeQuery();
> > while (rs.next()) {
> > t.setContactNo(rs.getString("tutor_contact_no"));
> > t.setZipcode(rs.getString("zipcode"));
> > t.settutor_id(rs.getInt("tutor_id"));
> >for (String : subjList)
even if i used subList.add(rs.get("mycolumnNameforthesubjects")
And then I used a system.out.println here to print out all the id, contact No, zipcode and subjects name
and then according to the stacktrace error, the System.out.println is the line that has the error - ResultSet not positioned properly, perhaps you need to call next.


Basically, I have removed the setAttributes lines and simply replace it with a System out line (which I had earlier used it to see the print-out and it worked before so am not sure why it is not working this time round)
to make it easier to diagnose what has gone wrong....

It could be due to Tomcat as yesterday I was trying to find out the issue but again and again, even after cleaning Tomcat directory before I run the code, even with certain lines already taken off, it shows me things that are not supposed to be there...