Boas práticas para controlador usando reflections

Front-end
#1

Alô galera!
Estou desenhando um controller baseado em reflection. Eu queria saber se vocês concordam com essa implementação
e o que poderia ser aprimorado/modificado/refeito e se estão sendo utilizadas boas práticas.

O ApplicationContext se deve ao fato de usar o Spring/Hibernate na parte dos dados.
Estou iniciando com Java e pegar um framework direto, ficou meio pesado.
Para integrar com jsp nas actions, usarei o requestDispatcher.

Exemplo: www.sample.com/Main?mvc=user/edit/5

See it:

[code]public class StartController extends HttpServlet {

@Override
public void service(HttpServletRequest req, HttpServletResponse resp)
        throws ServletException, IOException
{
    String vars = req.getParameter("mvc");
        ApplicationContext context = WebApplicationContextUtils.getWebApplicationContext(getServletContext());

    MainController main = new MainController();
    main.RESTProcess(req, resp, context, vars);
}

}

public class MainController extends Controller {

public void RESTProcess(HttpServletRequest req, HttpServletResponse resp, ApplicationContext context, String vars)
        throws IOException, ServletException
{
    String[] url;
    int nvars;

    String controller = null;
    String action = null;;
    String[] params = null;
    int i;
    int n;

    String controllerName;
    String actionName;

    if(vars == null || "".equals(vars.trim()))
    {
        this.redirect(resp,"home");
    }
    else
    {       
        url = vars.split("/");
        nvars = url.length;

        if(nvars > 0)
        {
            controller = url[0].trim(); //users
            if(nvars > 1)
            {
                action = url[1].trim(); //edit
                if(nvars > 2)
                {
                    n = 0;
                    params = new String[nvars - 2]; //array[0] = 5 (iduser)
                    for(i = 2; i < nvars; i++)
                    {
                        params[n] = url[i];
                        n++;
                    }
                }
            }


            controllerName = this.getFirstUpper(controller) + "Controller"; //HomeController, UserController pattern
            if(!controllerName.equals("Controller"))
            {
                actionName = "action" + this.getFirstUpper(action); //actionIndex, actionEdit pattern
                if(!action.equals("action"))
                {
                    try
                    {
                        Class classe = Class.forName("com.sample.controller." + controllerName);
                        try
                        {
                            Constructor c = classe.getConstructor(HttpServletRequest.class, HttpServletResponse.class, String[].class);
                            try
                            {
                                Object obj = c.newInstance(req, resp, context, params);

                                Method m = classe.getMethod(actionName, null);
                                m.invoke(obj, null);

                                System.out.println(obj.toString());
                            }
                            catch (Exception e)
                            {
                                e.printStackTrace();
                            }
                        }
                        catch (Exception e)
                        {
                            e.printStackTrace();
                        }
                    }
                    catch (Exception e)
                    {
                        e.printStackTrace();
                    }
                }
            }
        }
        else
        {
            this.redirect(resp,"home");
        }
    }
}

public String getFirstUpper(String str)
{
    Integer x = str.length();
    str = str.substring(0,1).toUpperCase().concat(str.substring(1, x));

    return str;
}

}

public class UserController extends Controller {

private HttpServletRequest req;
private HttpServletResponse resp;
private ApplicationContext context;
private String[] params;

public UserController(HttpServletRequest req, HttpServletResponse resp, ApplicationContext context, String[] params)
{
    this.req = req;
    this.resp = resp;
    this.context = context;
    this.params = params;
}

public void actionEdit()
{
    Long id = Long.valueOf(this.params[0]);
    System.out.println("/home/edit");
}

}[/code]

#2