Re: Detecting multiple class loaders

From:

Mark Space <markspace@sbc.global.net>

Newsgroups:

comp.lang.java.programmer

Date:

Wed, 19 Mar 2008 22:22:40 GMT

Message-ID:

<QmgEj.18977$xq2.8387@newssvr21.news.prodigy.net>

Chris wrote:

No, it's actually only one webapp. It's a data file. Using a database is
not an option. The only approach is to access the file through only one
synchronized class.

I think you may have already decided on which approach is best, but I'm
still somewhat confused. I don't know everything, so it helps me out
sometimes if I ask questions.

You have one web app, which is implemented as multiple "web apps" on
Websphere? So conceptually you have one app, but Websphere sees
multiple apps?

I'm asking because I assume I may run into the same problem at some
point in my career, and I'd like to know about problems before I hit
them, at least, if not also have some idea what a solution might be....

The only other reason for multiple classloaders that I can think of is
if there's multiple JVMs, on one or multiple machines.

It sounds like you need some sort of global or JVM wide context object,
where you can store one class object that all web apps can use. I've
never heard of such a thing though.