Untitled

package edu.course.registration;

/*
Tables/Objects
Student
  Long id
  String username
  String password
  Boolean isRegistrationElligible
  Boolean isAccountLocked

Courses
  Long id
  String courseName
  String description
  List<String> studentNames
  Map<String, Long> studentNamesElligibleToRegister

public class LoginControllerServlet extends HttpServlet{

	static int loginAttempt;
  StudentDAO studentDAO;
  static List<Students> students;
  ByteArrayOutputStream stream = new ByteArrayOutputStream();
  PrintWriter printWriter = new PrintWriter(stream);

	public void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException{
        response.setContentType("text/html;charset=UTF-8");
        HttpSession session = request.getSession(true);
        ServletContext servletContext = getServletContext();
        ServletConfig servletConfig = getServletConfig();

        students = studentDAO.getStudents();

		    Enumeration e = servletConfig.getInitParameterNames();
        if(request.getParameter("formType").equals("login")){
        	loginAttempt++;
          if(loginAttempt > 3){
            printWriter.write(<html>);
            printWriter.write(<head>);
            printWriter.write(<Login Error>);
            printWriter.write(<body>);
            printWriter.write(<h1>Student is locked out of classes and cannot register for classes</h1>);
            printWriter.write(</body>);
            printWriter.write(</html>);
            session.setAttribute("loginOutput", stream.toString();
          }
        	RequestDispatcher dispatcher = servletContext.getRequestDispatcher("/JSPLoginError.jsp");
          dispatcher.forward(request, response);
        } else if(request.getParameter("formType").equals("welcome")){
          if(loginAttempt > 3){
            printWriter.write(<html>);
            printWriter.write(<head>);
            printWriter.write(<Login Error>);
            printWriter.write(<body>);
            printWriter.write(<h1>Student is locked out of classes and cannot register for classes</h1>);
            printWriter.write(</body>);
            printWriter.write(</html>);
            session.setAttribute("loginOutput", stream.toString());
          } else {

            students.forEach(x -> {
              if(x.userName == session.getAttribute("username") && x.password == session.getAttribute("password")){
                printWriter.write(<html>);
                printWriter.write(<head>);
                printWriter.write(<Login Success>);
                printWriter.write(<body>);
                printWriter.write(<h1>Student logged in successfully</h1>);
                printWriter.write(</body>);
                printWriter.write(</html>);
                session.setAttribute("loginOutput", stream.toString());
              }
            }
          }
	}

	public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException{
		processRequest(request,response);

	}
}