Defference between Java and J2ee

[kirankamble]

Exact difference of Java J2EE and Advance Java including all Technology
for ex. J2ee(jsp ,servlet ,ejb etx.)
its Version Ex. Servlet2.5 etc. and some Use , why we use this tech rather than any other?

i know friends dis Q is very hard to ans . in de sense its too complecated..
hope friends u will help me

Thankx in Advance

[Eranga]

Java is the main category you have to come across with. There basically have sub categories, like J2SE(core Java), J2ME, J2EE. So talking about the difference between Java and J2EE obvious.

Since we have such categories, (actually we called them as Java technologies) depend on the application we can choose the better one. There are some advantages, and that comes the important of such.

Hope it's help.

[kirankamble]

Hi thnxk 4 de reply .

c as per u r exp i gt de basic idea . and i knw dis thing allready .. dear

i want 2 knw wht exactly diff , can u make table wise diff , and can u maintion some J2ee tech name and its use , like wht we use EJb rather than jsp and servlet and etc.....

plz let me knw ... thnkx ones again

[linuxswan]

Java is the basic language where you have learn all the concepts that how to use them.

Later part is J2EE is for enterprise based applications coming into picture for example you want to create a application which will access the remote data and displaying at your end. For this if you are doing in Basic java you need to work on the networking and fetching of data remotely i.e core level things also you have to work on. But where as by using the J2ee components you can directly keep concentrate on the methods used to display the data which is taken from the database. Rest of the things like how to communicate and how to retrieve the data is managed by the J2ee container or its services.

Then coming into J2ME the name itself shows that it is usefull for Micro edition i.e to embed the applications in mobiles, set top boxes and all other applications which need a small operating system like things. You know the J2SE is approximately using 100mb (example) then putting this much huge into the mobile is not possible and also all are not usable also. So by using the micro edition you are able to put the java virtual machine which may be small.

I think this information has given small idea about all.

[Eranga]

I'll try to explain in my best here.

As I said earlier, J2EE builds on a solid layer of J2SE, and implementing for industry standards. So that J2EE in fulls with all key features used in industries in higher level actually. Some of them are as follows.

In client side J2EE support pure HTML and Java applets. So it's realize of Java Server Pages and Servlets.

JavaBeans(EJB) provides functions such as memory management, concurrency, threading and many more.

In the view of DB, JDBC is the standard interface for Java databases, and it's most reliable in applications.