replacing .class files while server is running

[j.gohel]

I have some java files and i compile them and placed them into the respective areas in my web application.

Now suppose some code change is required in the existing files and i need to
compile the source files once again ,then is it required to shut down the
application server/web server and then only replace the old .class file with the new one??

If this is the case then i would like to know the reason behind this thing from
the forum members.

I am facing a similar kind of problem.
I replaced some .class files with their new compiled versions.But the changes
were not reflected.Also after restarting the server the changes did not
reflected.

I am using weblogic6.1 server.

Thanks.

[Belisarius]

As to the main question - it depends on how the server works. I haven't used Weblogic before, so I don't know how good it's class-loading is. I'd guess that there is some way to tell it to reload the application without restarting the whole server program, but reloading the server program would work.

As to your specific problem, if I had to guess, they're being placed in the wrong spot. Or there is some other misconfiguration with the server - it's keeping a cache or something along those lines. Without knowing the system in more detail, I'm afraid I can't help. I'd suggest looking through Weblogic support forums (I'm assuming they exist).