Luigi Barbato

if I want to order an array of objects according to need, in chronological order, alphabetically, weight. How are the Comparable interfaces and the comparator implemented?

So an example: My web app is an e-commerce. The client selects 3-4 items and place them in his cart. If I stored these informations in the session, I lost them when client log...

Why? I explain it: I'm doing an university project. in the course we use the basic MVC with Servlet,JSP,JBDC. I'm realizing a social network that is more that requested from c...

I'm doing a project for an university test. in The course we use only Servlet(for the controller),Jsp(for the view),jdbc(for queries). We don't use any framework. you have exp...

Guys someone is familiar with Web servlets? I'm implementing three filters in chain. The problem is that last filter returns me a blank page. I debugged it and from first filt...

but why using a middleware? the sql operations are generally simple: insert,update,delete,search. Why using an another layer?

but during the implementation of my login servlet, I have to check cookies and session? or only cookies or only session?

What is the difference between cookie and session? I have to manage both in backened?

Yo guys do you use Hibernate middleware or SQL directly in your java ee web apps?

Thanks dear:) Only a last question: my professor suggests me to store the notification data in the Application Context to not access to Db many times. What do you think?

if I create 3 different Comparators that extend Comparator class?

it's possible? I'm doing this homework for an university exam.

Another thing: Can I implement a Notification System With same logic of which we have spoken? (I'm developing a social network based on stories)

but I, as backend developer, I have to manage both or I have to manage Session only? If I have the session why I have to use cookies?

Guys, I Know, this is a Java Group, but I need an answer on a C question. I would to ask you because you are pretty awesome. Can I ask you?

i'm using MVC paradigm. In this case How I have to organize the workspace? Controller -> servlet -> web socket?

Thi is the Url-rewriting technique, right? but this is secure? because we expose the session id

Hi guys! do you know how can I create a notification system for my Java EE web app?

Maybe I save the informations with a listener before happen. Can I?

in my UML diagram I have to insert my frames classes too?