Trouble with ResultSet using executeUpdate

I am new to programming and have run into a problem while using executeUpdate with the resultSet next() method. It iterates once only through the result set then the execute update closes the result set. I get error: ResultSet not open. Operation "next" not permitted. Verify that autocommit is off. I have added the con.setAutoCommit(false) statement but problem still persists. I need to run the update multiple times with different variable values. Here is the code I have:

    try {
        String eidQuery = "SELECT EID FROM EMPLOYEE_DATA WHERE ACTIVE = TRUE ORDER BY EID";
        int nextEID;
        Statement st = con.createStatement();
        con.setAutoCommit(false);
        rs = st.executeQuery(eidQuery);
        while (rs.next()){
            nextEID = rs.getInt(1);
            String getDailyTotals = "SELECT DATE, SUM(TOTAL), MAX(OUT_1) FROM PUNCHES WHERE EID = " + nextEID + " AND DATE >= '" + fd + "' "
                    + "AND DATE <= '" + td + "' GROUP BY DATE";

            ResultSet rs2 = st.executeQuery(getDailyTotals);
            while (rs2.next()){
                double dailyTotal = rs2.getDouble(2);
                if (dailyTotal > 8){
                    double dailyOT = dailyTotal-8;
                String dailyDate = rs2.getDate(1).toString();
                Timestamp maxTime = rs2.getTimestamp(3);
                String updateOT = "UPDATE PUNCHES SET OT = " + dailyOT + " WHERE EID = " + nextEID + " AND DATE = '" + dailyDate + "' AND OUT_1 = '" + maxTime + "'";

                st.executeUpdate(updateOT);

            }
            }
        }

        rs = st.executeQuery("SELECT PUNCHES.EID, EMPLOYEE_DATA.FIRST_NAME, EMPLOYEE_DATA.LAST_NAME, SUM(PUNCHES.OT) FROM PUNCHES "
                + "JOIN EMPLOYEE_DATA ON PUNCHES.EID = EMPLOYEE_DATA.EID WHERE PUNCHES.DATE >= '" + fd + "' AND PUNCHES.DATE <= '" + td + "' GROUP BY EMPLOYEE_DATA.FIRST_NAME, EMPLOYEE_DATA.LAST_NAME, PUNCHES.EID");

        Reports.setModel(DbUtils.resultSetToTableModel(rs));

    } catch (SQLException ex) {
        Logger.getLogger(GUI.class.getName()).log(Level.SEVERE, null, ex);
        JOptionPane.showMessageDialog(null, ex);
    }

You're new to programming and (obviously) Java. Here are a few recommendations that I can offer you:

1. Do yourself a favor and learn about PreparedStatement. You should not be creating SQL by concatenating Strings.
2. You are committing the classic newbie sin of mingling database and UI Swing code into a single, hard to debug lump. Better to decompose your app into layers. Start with a data access interface that encapsulates all the database code. Get that tested and give your UI an instance to work with.
3. Do not interleave an update query inside the loop over a ResultSet. Better to separate the two completely.
4. Read about MVC. You'll want your Swing View to be separate from the app Controller. Let the Controller interact with the data access interface, get the results, and give the results to the View for display. Keep them decoupled and separate.
5. Learn JUnit. It'll help you with testing.