btnLogIn.addActionListener(new ActionListener() {
        @SuppressWarnings({ "deprecation" })
        public void actionPerformed(ActionEvent arg0) {
            // creating connection and query variables
            Connection conn = null;
            ResultSet rs = null;
            PreparedStatement pst = null;
            String url = "jdbc:mysql://MY.DB.URL/*******";

            //load the driver
            try {
                Class.forName("com.mysql.jdbc.Driver");

                // making connection
                conn = DriverManager.getConnection(url, "*******", "*******");
                // query
                String sql = "select * from log_in where username = ? and pssword = ?";
                pst = conn.prepareStatement(sql);
                pst.setString(1, UsernameField.getText());
                pst.setString(2, PasswordField.getText());
                rs = pst.executeQuery(sql);

                if(rs.next()){
                    //Retrieve by column name
                    String username = rs.getString("username");
                    System.out.println("Username : " +  username);
                    String password = rs.getString("pssword");
                    System.out.println("Password : " +  password);
                    lblLog_In.setText("Welcome.");
                } else {
                    lblLog_In.setText("ERROR: invalid log in information.");
                }
            } catch (SQLException e) {
                System.out.println("SQL Exception.");
            } catch (ClassNotFoundException e) {
                System.out.println("Class not found exception.");
            }
        }
    });