package com.j2ee.demo;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.*;

@WebServlet("/Welcome")
public class Welcome extends HttpServlet {

    static int count_3 = 0;

    void printWelcome(String username, String password, String gender, String email, String phoneNum, PrintWriter out) {
        out.println("<html><body>");
        out.println("<h1> Welcome, " + username + "</h1>");
        out.println("<h2> Here is your password, " + password + "</h2>");
        out.println("<h2> You are a " + gender + "</h2>");
        out.println("<h2> This is your email " + email + "</h2>");
        out.println("<h2> This is your phone number " + phoneNum + "</h2>");
    }

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {


//        String ssid = hs.getId();
//        out.println(ssid);

        String vName = req.getParameter("username");
        String vPass = req.getParameter("password");
        String vGender = req.getParameter("gender");
        String vEmail = req.getParameter("email");
        String vPhoneNumber = req.getParameter("phone");
        String rememberMe = req.getParameter("rememberMe");

        PrintWriter out = resp.getWriter();

//        HttpSession hs = req.getSession();
//        Object isLoggedIn = hs.getAttribute("isLoggedIn");
//        out.println(isLoggedIn);

        resp.setContentType("text/html");

        printWelcome(vName, vPass, vGender, vEmail, vPhoneNumber, out);


        out.println("</body></html>");
        System.out.println("rememberMe: " + rememberMe);

        Object cookieExists = req.getSession().getAttribute("cookiesExists");
        System.out.println("cookiesexst " + cookieExists);

        if (vName != null && vPass != null && vGender != null && vEmail != null && vPhoneNumber != null) {
            cookieExists = null;
        }

        if (cookieExists == null) {

            Cookie usernameC = new Cookie("username", vName);
            usernameC.setMaxAge(60 * 60 * 24);
            resp.addCookie(usernameC);

            Cookie passwordC = new Cookie("password", vPass);
            passwordC.setMaxAge(60 * 60 * 24);
            resp.addCookie(passwordC);

            Cookie genderC = new Cookie("gender", vGender);
            passwordC.setMaxAge(60 * 60 * 24);
            resp.addCookie(genderC);

            Cookie emailC = new Cookie("email", vEmail);
            passwordC.setMaxAge(60 * 60 * 24);
            resp.addCookie(emailC);

            Cookie phoneNumC = new Cookie("phoneNum", vPhoneNumber);
            passwordC.setMaxAge(60 * 60 * 24);
            resp.addCookie(phoneNumC);

            Cookie remember = new Cookie("rememberMe", rememberMe);
            passwordC.setMaxAge(60 * 60 * 24);
            resp.addCookie(remember);

            req.getSession().setAttribute("cookiesExists", true);
        }

        Object username = req.getAttribute("username");
        Object password = req.getAttribute("password");
        Object gender = req.getAttribute("gender");
        Object email = req.getAttribute("email");
        Object phoneNum = req.getAttribute("phoneNum");

        PrintWriter out = resp.getWriter();

        resp.setContentType("text/html");

        if (cookieExists != null) {
            String usernameStr = username != null ? username.toString() : "";
            String passwordStr = password != null ? password.toString() : "";
            String genderStr = gender != null ? gender.toString() : "";
            String emailStr = email != null ? email.toString() : "";
            String phoneNumStr = phoneNum != null ? phoneNum.toString() : "";
            printWelcome(usernameStr.toString(),
                    passwordStr.toString(),
                    genderStr.toString(),
                    emailStr.toString(),
                    phoneNumStr.toString(),
                    out);

        } else {
            printWelcome(vName, vPass, vGender, vEmail, vPhoneNumber, out);
        }


        out.println("</body></html>");
        String requestURI = req.getRequestURI();

        if (requestURI.endsWith("/s03")) {
            count_3++;
        }

        System.out.println(count_3);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        System.out.println("Go to doGet");
        doGet(req, resp);
    }
}

whats wrong in this code? I want to make it so that when the user register it will save the data in cookies and when the user logins with the same username and password it will display the data of the user.