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Basic dout on EJB and JB

Anonymous
Ranch Hand

Joined: Nov 22, 2008
Posts: 18944

Hi,
I iam new to EJB, can anybody write the difference between Enterprise java bean and javaBean? I will appreciate if anybody answers
Anonymous
Ranch Hand

Joined: Nov 22, 2008
Posts: 18944
Hai,
I suggest you to read the first two chapters of Mastering EJBs by EdRoman.This gives the clear idea of the difference.
thanks.
Anonymous
Ranch Hand

Joined: Nov 22, 2008
Posts: 18944
Hi,
Thanks for ur suggestion.But,how, can u please post it's URL.
Thanks inadvance.
Anonymous
Ranch Hand

Joined: Nov 22, 2008
Posts: 18944
Hai the book is for free download on TheServerside.com.YYou can see other postings in this section.
thanks
Anonymous
Ranch Hand

Joined: Nov 22, 2008
Posts: 18944
hi darsi

1) a javabean exists mostly on the client side(i have used mostly is because beans can also be used in the server side through JSP pages) and hence is a client side component. However EJB is a server side technology.
2) javabeans are inprocess while ejb's are not
Regds.
Rahul

Anonymous
Ranch Hand

Joined: Nov 22, 2008
Posts: 18944

Hi Rahul,
Thank u so much for ur answer and here small doubt,What do u mean by inprocess.
Thanks inadvance.
Anonymous
Ranch Hand

Joined: Nov 22, 2008
Posts: 18944
hi,
when ever u start a new application a new process starts. These processes have a distinct memory area of their own. Thus there is a cost involved in starting new processes. Also communicatin between these two processes too is costly.
However when u start a new thread in a process , this shares the memory area with the existing process. this is the major advantage of threads vis a vis processes.
The sucess of servlets with respect to cgi has been that servlets spawn threads while cgi spawns new processes which have a heavy cost.
the tern "inprocess" refers to the sharing of the memory area in general.
Regds.
Rahul
alagan sathianathan
Greenhorn

Joined: Aug 12, 2000
Posts: 18
hi
javabean EJB
can be independent can not be
can have GUI no GUI
can not be deployed resides in serverside
alagan
 
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