What is j2ee?

J2EE is another shortcut in the world of computer technology. This means platform Java 2, Enterprise Edition . As soon as we trace his line, its meaning will be clear. First, 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 that converts computer instructions into functions.

Java is such that it allows communication between platforms between multiple types of equipment. For example, a programmer can develop the Java code on a desktop computer and expect to run on other computers, routers and even mobile phones if these devices support Java. This portability is described by the abbreviation of the Sun Wora, which means "writing once, running anywhere". A large number of indoor computers, computers, mobile phones and other electronic devices work using Java.2 . As with many software applications, the J2EEE platform Version 2 is actually the number 2Often dropped, so j2ee becomes Java EE. Traditionally, however, it is still J2EE.

Now on ee . It means Enterprise Edition , which is a powerful form of Java platform. So far, Sun has created three editions. The most accurate is the Micro Edition, which is used for mobile phones and PDA. The following form can be shortened as Java Me.

Middle Edition is a standard edition that can run on mobile devices, laptops and desktop computers. The short name of this edition is Java SE. Building our way up the pyramid, we finally come to the Enterprise Edition, which includes all the Micro Edition and Standard Edition functionality and also includes routines and subroutines designed specifically for servers and mainframes.

One of the main advantages of J2EE, despite the assumption of such a strong source code, is that it is available for free. You can download it right now from the Sun websiteMicrosystems. There are tools about open third -party source code to help you, including Apache Tomcat and JBoss. However, if you do not start your own server server with multiple work or mainframe, you are unlikely to meet or need J2EEE. Yet it is good to know what such things cost.