Untitled



import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Servlet implementation class helloservlet
 */
@WebServlet("/helloservlet")
public class helloservlet extends HttpServlet {
    private static final long serialVersionUID = 1L;

    /**
     * Default constructor.
     */
    public helloservlet() {
        // TODO Auto-generated constructor stub
    }

    /**
     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {


        PrintWriter out = response.getWriter();
        Cookie cookie = null;
        Cookie[] cookies = null;
        cookies = request.getCookies();


          response.setContentType("text/html");


            out.println("<html>");
            out.println("<body>");
            out.println("<form action='login' method='GET'>");

            if (cookies==null) {
            out.println("Käyttäjätunnus: <input type='text' name='username'><br />");
            out.println("Salasana: <input type='password' name='password'>");
            }
            else {

                String username = null, password = null;

                for (int i = 0; i < cookies.length; i++) {
                    cookie = cookies[i];

                    if(cookie.getName().equals("Username")) {
                        username = cookie.getValue();
                    }
                    if (cookie.getName().equals("Password")) {

                        password = cookie.getValue();
                    }
                }
                out.println("Username: <input type='text' value='" + username + "' name='username'/> <br/>");
                out.println("Password: <input type='password' value='" + password + "' name='password'/> <br/>");
                out.println(cookies);
            }
            out.println("<input type='submit' value='Login' />");
            out.println("</form>");
            out.println("</body>");
            out.println("</html>");

    }

    /**
     * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub
    }

}