Correct usage of if and else

I'm working with Java web (Filters), I want to redirect to a different JSP pages if user logged with some credentials. If I enter credentials for client, It logged fine, but if I want to logged as supervisor it redirects me to unauthorized login. I think this is for my if and else usage.

There is my code(do Filter):

try {
              String usr = request.getParameter("usr");
        String pswd = request.getParameter("password");
        if(usr == null && pswd == null){
             request.getRequestDispatcher("index.html").forward(request, response);
        }
        if(usr.equals("Client") & pswd.equals("123") ){
            request.getRequestDispatcher("/Client.jsp").forward(request, response);

       }else 
             request.getRequestDispatcher("/unautorized.jsp").forward(request, response);

        if (usr.equals("Supervisor") & pswd.equals("123")){
         request.getRequestDispatcher("/Supervisor.jsp").forward(request, response);
        }else
            request.getRequestDispatcher("/unautorized.jsp").forward(request, response);


         if (usr.equals("Checker") & pswd.equals("123")){
         request.getRequestDispatcher("/Checker.jsp").forward(request, response);
        }else 
             request.getRequestDispatcher("/unautorized.jsp").forward(request, response);
        chain.doFilter(request, response);

Why it stays at first else?