By: aathishankaran Printer Friendly Format
J2EE is yet another acronym
in the world of computing. This one stands for Java 2 Platform, Enterprise
Edition. Its significance will become clear once we trace its lineage.
First of all, Java is a programming language developed by Sun Microsystems, one
of the giants of the industry. The Java Platform is a virtual machine, a
processor look-alike that translates computerized instructions into functions.
The Java language is such
that it allows cross-platform communication between multiple kinds of devices.
For example, a programmer can develop Java code on a desktop computer and expect
it to run on other computers, routers, and even mobile phones, as long as those
devices are Java-enabled. This portability is described by the Sun acronym WORA,
which stands for "Write once, run anywhere." A large number of
mainframes, computers, mobile phones, and other electronic devices operate using
the Java Platform.
The 2 in the acronym
J2EE stands for Version 2. As with many software applications, J2EE is
Java Platform Version 2. Actually, the number 2 is often dropped nowadays, so
J2EE becomes Java EE. Traditionally, though, it's still J2EE.
Now, on to the EE.
It stands for Enterprise Edition, which is a powerful form of the Java
Platform. Sun has created three editions so far. The most precise is the Micro
Edition, which is used for mobile phones and PDAs.
Following form, this can be abbreviated as Java ME.
The middle edition is the
Standard Edition, which can run on mobile devices, laptops and desktop
computers. The abbreviated name of this edition is Java SE. Building our way up
the pyramid, we come at last to the Enterprise Edition, which includes all the
functionality of the Micro Edition and the Standard Edition and also features
routines and subroutines designed specifically for servers and mainframes.
One prime benefit of the
J2EE, despite the assumption of such a powerful set of source code, is that it
is available for free. You can download it right now from the Sun Microsystems
website. Third-party open-source tools are available to help you as well,
including Apache Tomcat and JBoss. Unless you are running your own
multiple-workstation server system or mainframe, however, you are unlikely to
encounter or have a need for J2EE. Still, it's good to know what such things
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