try {
    String url = "jdbc:derby://localhost:1527/Members";
    String username = "admin1";
    String password = "admin1";

    Connection con = DriverManager.getConnection(url, username, password);
    Statement stmt = con.createStatement();

    String query = "INSERT INTO BOOKING(MEMBERID, NAME, CONTACT, "
            + "EMAILADDRESS, RESERVATIONDATE, RESERVATIONTIME) "
            + "VALUES('"+txtMemberID.getText()+"', '"+txtName.getText()+"', "
            + "'"+txtContact.getText()+"', '"+txtEmail.getText()+"', "
            + "'"+comboDate.getDate()+"', '"+comboTime.getSelectedItem()+"')";

    stmt.execute(query);

    JOptionPane.showMessageDialog(null, "Booking created");

    txtMemberID.setText(null);
    txtName.setText(null);
    txtContact.setText(null);
    txtEmail.setText(null);
    comboDate.setDate(null);
    comboTime.setSelectedItem("00");

    }
    catch(SQLException ex) {
        JOptionPane.showMessageDialog(null, ex.toString());
    }