private void loadMap() {
        Connection con = DbConnector.getConnection();        
        try (Statement stmt= con.createStatement();
             ResultSet rs  = stmt.executeQuery("SELECT CODE, DESCRIPTION FROM Locations");)
        {
            while(rs.next()) {
                map.put(rs.getString("Description"), rs.getString("Code"));
            }
                        
        } catch (SQLException ex) {
            ex.printStackTrace();
        }

    }