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From Berin Loritsch <blorit...@apache.org>
Subject Re: version numbers in jars
Date Thu, 21 Feb 2002 20:20:32 GMT
Thomas B. Passin wrote:
> [Elliotte Rusty Harold]
>>You're still using the classpath for jars? I only do that when I want
>>to change the classpath on a per-run basis, in which case I am
>>changing it and using the version number is not a problem. However,
>>for standard libraries like xerces.jar that are shared among multiple
>>applications I just dump them in my ext directory and forget about
>>them. It's much easier than changing the classpath.  My normal
>>classpath doesn't contain any jar archives, just directories of my
>>own compiled code that hasn't been bundled into a jar.
> If all those versions are in the ext directory, how do you make sure that
> any given app finds the right version?

For some jars like Xerces/Xalan, if you code to the plugable API (aka
JAXP), you only need to upgrade the jar--no recompilation or refactoring

For others, like the Commons Logging API change recently, this approach
becomes messier.


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  deserve neither liberty nor safety."
                 - Benjamin Franklin

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