Tutorial for 3-tier architectures

[stefan bisang]

hi folks

I would like to learn more about 3-tier architecture(presentation, business logic, data) programming in java. Does anybody know a good tutorial (or a book)? Especially tutorials about building a sample application would be very interesting.

Any proofen tutorial would be a help

Thanks
Stefan

[Saurabh Pillai]

Wiki entry about MVC http://en.wikipedia.org/wiki/Model%E2%80%93view%E2%80%93controller. Try to understand the concept first.

Quick googling returned tutorial on MVC on Oracle's website http://www.oracle.com/technetwork/articles/javase/mvc-136693.html

If you are looking for implementation of MVC in web app, then search for Spring MVC.

[Snehal Masne]

3-tier is any project having a

a.) Presentation Layer containing UI ( written in asp.net)

b.) BusinessLogic Layer containing business logic ...UI will call this layer instead of calling data layer directly for security reasons

c.) Data Access Layer so that all calls to database are abstracted and no-one can fire any query directly into database.

Similarly you can implement n-tier by adding more layers like

d.) A Service layer Now flow will by Presentation Layer -> Service -> Business Layer -> Database

and so on...