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Re: Need to learn J2EE and friends

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On 9/6/2011 5:20 AM, Arved Sandstrom wrote:
> 1. As you begin teasing apart what a J2EE/Java EE application does, do
> keep in mind that at their core these API families are 95 percent about
> writing web apps. Plain and simple. Whether it's the Struts framework
> building upon  the Servlet API in the web tier, or session beans in the
> services layer that encapsulate your business logic and provide
> scalability and lifecycle management, it's all about scalable and
> distributed servicing of requests.

> 6. "Enterprise" in "J2EE" or "Java EE" or "Enterprise Java" means "web".
> Official documentation may not put it quite so baldly, but it's
> basically all about handling HTTP/HTTPS requests from web browsers, or
> SOAP requests coming in over HTTP/HTTPS for a Java web service.
>
> The other main non-negligible input mechanism is messaging (JMS, or Java
> Message Service).
>
> There are obviously some other aspects to "enterprise", like being able
> to talk to other systems like an EIS (you'll see the Connector
> architecture discussed in the tutorial). But fundamentally it's about
> being a web app.

I would say that about 50% of Java EE is by nature web oriented, but
 >80% of Java EE apps have a web interface (I am not counting desktop
apps using SOAP/HTTP as being web here - if we do it would be >95%).

It is perfectly valid to write desktop apps in Java (using Java/IIOP or
SOAP/HTTP) or .NET (using SOAP/HTTP). It is just relative rare out in
the real world (even though I actually know a lot of examples, but
I do not expect that to be representative of the world).

Arne

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Need to learn J2EE and friends nroberts <roberts.noah@gmail.com> - 2011-09-05 18:23 -0700
  Re: Need to learn J2EE and friends Lew <lewbloch@gmail.com> - 2011-09-05 18:48 -0700
    Re: Need to learn J2EE and friends nroberts <roberts.noah@gmail.com> - 2011-09-06 09:05 -0700
      Re: Need to learn J2EE and friends Lew <lewbloch@gmail.com> - 2011-09-06 15:03 -0700
      Re: Need to learn J2EE and friends Arne Vajhøj <arne@vajhoej.dk> - 2011-09-06 19:09 -0400
  Re: Need to learn J2EE and friends Arne Vajhøj <arne@vajhoej.dk> - 2011-09-05 21:49 -0400
  Re: Need to learn J2EE and friends markspace <-@.> - 2011-09-05 18:58 -0700
  Re: Need to learn J2EE and friends Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2011-09-06 06:20 -0300
    Re: Need to learn J2EE and friends nroberts <roberts.noah@gmail.com> - 2011-09-06 08:06 -0700
      Re: Need to learn J2EE and friends Arne Vajhøj <arne@vajhoej.dk> - 2011-09-06 19:06 -0400
        Re: Need to learn J2EE and friends markspace <-@.> - 2011-09-06 17:30 -0700
          Re: Need to learn J2EE and friends Arne Vajhøj <arne@vajhoej.dk> - 2011-09-06 20:42 -0400
    Re: Need to learn J2EE and friends Arne Vajhøj <arne@vajhoej.dk> - 2011-09-06 19:01 -0400
      Re: Need to learn J2EE and friends Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2011-09-06 21:09 -0300

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