lab

 <%
        Singltone1 setId = Singltone1.getInstance();
        Cookie[] cookies = request.getCookies();
        if (cookies == null) {
            response.sendRedirect("http://localhost:8080/lab2_war_exploded/");
        }
        else {
            boolean enableToAccess = false;
            for (Cookie cookie : cookies) {
                if (cookie.getName().equals("sessionId")) {
                    if (setId.containsSessionId(cookie.getValue())) {
                        enableToAccess = true;
                    }
                }
            }
            if (!enableToAccess)
                response.sendRedirect("http://localhost:8080/lab2_war_exploded/");
        }
    %>