I want to change Javascript pop up dialog to sweet alert 2 created a voting system project

Question

The old JavaScript alert functions perfectly but sweet alert picks the first condition and if ignore the rest.

• Jsp page*

   <form> <button id=“btn1”> Start Voting<\button> <\form>

String start = request.getParameter("start");

if (start != null) {
            // out.print("due:"+ElectionDao.isTimeDue(el));

            if (ElectionDao.isTimeDue(el) == true) {
                // out.print("due:"+ElectionDao.isTimeDue(el));
                ElectionDao.startElection();

// request.setAttribute("startElection", "success");

                out.print("<script>alert('Election Started!')</script>");
                request.getRequestDispatcher("./Admin_Election.jsp").include(request, response);
            } else {
                out.print("<script>alert('Election time not due!')</script>");
                request.getRequestDispatcher("./Admin_Election.jsp").include(request, response);

            }

The code works fine with JS alert but since I changed to sweet alert it only the first condition works the rest are ignored