Learn J2EE when we know java very well

[Macbeth]

I want to start learning J2EE, knowing that I already know very well the java. I have often used the language during my 5 years of study and it is 3 years that I use in business. What can you advise me? Is it complicated to master J2EE? Is it really possible to get trained all alone in this kind of techno?

[Job-finder]

I would suggest you to first focus on servlets/jsp in a "basic":
- Eclipse (still)
- Tomcat

Goal: make a servlet + jsp. Post a phony web page on your browser.

Once you feel comfortable with the principle of web applications, sessions, settings and whatnot, maybe you get into the most common frameworks (Struts, Spring), and it then finally becomes the rock n roll

[Engg.]

J2EE is vast. Before attacking frameworks like struts, hibernate, seam, etc., you concentrate on learning the basic of what form the J2EE:

the servlet / jsp
Transactions
JNDI
EJB

The basic reference book would be the official sun on JavaEE http://java.sun.com/javaee/5/docs/tutorial/doc/.

A small overview from the link is here:
The Java EE 5 platform introduces a simplified programming model. With Java EE 5 technology, XML deployment descriptors are now optional. Instead, a developer can simply enter the information as an annotation directly into a Java source file, and the Java EE server will configure the component at deployment and runtime. These annotations are generally used to embed in a program data that would otherwise be furnished in a deployment descriptor. With annotations, the specification information is put directly in your code next to the program element that it affects.

[Recruiter]

I advise you in order:

1) Servlet / JSP (like Hello World)
2) Servlet / JSP + DB operations
3) Servlet / JSP + operations by DB Datasource (JNDI)
4) EJB
5) Framework struts or jsf (JSF is more in tune with the times)
etc. ...

2 and 3 are very close, they could be together ...

[contact_dhavalce]

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