J2EE version

Dear all,
I am new user of j2ee technology. Here, I have sveral questions:
1. Does j2ee have the HP-UX version? If no, can j2ee Solaris version can be installed on HP-UX?
2. If I installed j2ee, do I need to install the Tomcat to support the servlet and JSP with Apache web server?
3. Before installing j2ee, I must install j2sdk first, right?
4. J2ee must be used together with Web server, is it correct?
Any reply will be greatly appreciated.
Have a good day!

1. J2ee should be able to act as an Web server, which
can support JSP, servlet, JavaBeans, and http
protocol, is this understanding correct? If it is
correct, it means that I don't need to install the
additional Web server such as Apache, Tomcat (for JSP
and Servlet) on my application server because I have
installed J2ee on it. Please give me an answer.Once you install J2EE RI, you need no other software (except those for database connectivity).
2. Can Tomcat be regarded as a stable web server which
supports JSP and Servlet? If so, it also means that I
don't need to install additional Web server software
such as Apache if I have installed Tomcat.Tomcat is stable, Sun includes it in the RI -- the reference implementation.
3. Must Tomcat be combined into Apache server to run?
If separatedly started up, I found that Tomcat is the
primary program to reponse the http request. It looks
that now Apache doesnot in use.Tomcat need not be combined with Apache. Running them together is a good thing to do if you have a lot of static content, though. Tomcat is a servlet engine and a Web server, with the emphasis on the servlet engine. Apache performs better serving static files (e.g., html, jpeg, gif, Flash animations).
4. If J2ee is installed on a physical server and our
Oracel database is installed on another physical
server, is it possible for us to use JSP and Servlet
technology of J2ee server to access the database
server? Do we need to install additional software on
database server for this communication?No additional software is required on the database server. You have to install Oracle JDBC drivers on the J2EE server.
5. As for above question 4, I actually want to know
the role of the JDBC. Can only JDBC build the
connection between application and database servers?I don't know of any other database connectivity API.
6. Can I get a suggestion for choosing the server
type: HP-UX or Sun Solaris as our application server,
on which J2ee and related web server Apache (if
needed) will be there?It really depends on what hardware have or plan to have. I wouldn't really prefer one over the other. More bangs for the same buck is what I would go for.
Mind you that though J2EE RI is good for training and exploration, it's not a production grade server. It is a reference implementation and as such it only claims to be a correct implementation of the many specs that constitute J2EE. It lacks many optional operational features that vendors implement.

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Message was edited by: Eylon Steiner
http://www.eshmore.com
Message was edited by: Eylon Steiner

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