View Full Version : What is jdk i2se j2ee (j2re) user for?

8th December 2004, 03:08 PM
I have notice there are some patch of java applications
but what it is used for?
jdk for?
or other else is common in Fedora?

8th December 2004, 08:05 PM
JRE = "Java Runtime Environment" (use it to run java programs)
JDK = "Java Development Environment" (used to compile java programs, includes JRE)
J2EE = "Java 2 Enterprise Environment" (used to develop and run very large and complex multi-tier applications, usually for Internet based applications, includes several additional java libraries and tools. Includes both the JRE and the JDK. I wouldn't worry about it if you are not an experience Java and Web developer.

9th December 2004, 09:11 AM
I see!
so if I have install j2ee I need not install jre ? or even jdk?

9th December 2004, 09:30 AM
It sounds like you might want to start with the "JDK" (which contains "JRE)...

J2EE is VERY large and complex, if you have not programmed java before then you are probably best off staying with the JDK......

If you are not programming Java, then all you need is the JRE.......

10th December 2004, 06:30 AM
Actually, J2EE does not "include" J2SE - it's an extension built on top of J2SE. In other words, you have to have J2SE installed before you can use J2EE.

But James is quite right - this is one of those cases where "if you have to ask, you don't want to get/use it." 90% of the folks only need JRE - that's the Java Runtime Environment, by the way. That paticular package contains only the Java executables needed to run Java-based programs.