public String newUserDetails(UserDetails ud) { try { rs = stmt.executeQuery( "select Email from Customer_Information where Email = \"" + ud.getEmailAddress() + "\";"); while (rs.next()) { if (ud.getEmailAddress().equals(rs.getString("Email"))) ; { return "Username already exists"; } } System.out.println(ud.getPassword()); PreparedStatement preparedStatement = conn.prepareStatement( "Insert into Customer_Information (Email,Name,Password) values (?,?,?);"); preparedStatement.setString(1, ud.getEmailAddress()); preparedStatement.setString(2, ud.getName()); preparedStatement.setString(3, ud.getPassword()); preparedStatement.executeUpdate(); } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); return "Register unsuccessful"; } return "Successfully Register"; }