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From "Caldarale, Charles R" <Chuck.Caldar...@unisys.com>
Subject RE: Doubt on lifecycle of a class in "shared" folder
Date Thu, 17 Jul 2008 14:08:12 GMT
> From: Edward Song [mailto:edward.song@nuhorizons.com]
> Subject: RE: Doubt on lifecycle of a class in "shared" folder
>
> I believe it is because you are sharing the class definition,
> not instances, even if they are static instances.
>
> So webapp1 will create a static instance of Sharer, so will
> webapp2 off of the same class definition, but each will have
> its own instance.

What, pray tell, is a "static instance" in Java terminology?

If the class file of interest is being loaded by separate classloaders, then there will be
separate java.lang.Class instances for each, despite originating from the same .class file.
 However, the OP claims that the class is in the shared library, and should therefore be loaded
by Tomcat's shared class loader - once.

Since independent testing verifies the proper operation of a normally configured Tomcat, the
OP's environment is either non-standard (e.g., someone's been mucking around with conf/catalina.properties),
or the framework is using its own classloader, or the OP doesn't really know where his classes
are.

 - Chuck


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