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From "GOMEZ Henri" <hgo...@slib.fr>
Subject RE: version numbers in jars
Date Thu, 21 Feb 2002 09:11:58 GMT

>The following is from http://www.ibiblio.org/java/#recent
>I have a request to make of the log4j team, as well as all the other
>Java programmers at the Apache Project, IBM alphaWorks, Sun, and
>everyone else who distributes JAR archives. Could you please attach a
>version number to all your JARs? I maintain several systems whose ext
>directories I try to keep in sync. However, it's extremely difficult
>to do this when there's no straight-forward way to look at log4j.jar
>(or xercesImpl.jar, servlet.jar, jedit.jar, saxon.jar, or any of the
>several dozen other jar archives I work with on a daily basis) and
>quickly tell which version it holds. I personally experience this
>problem mostly with XML related jars, but the problem is hardly unique
>to XML. It's especially problematic when some other software requires
>a particular version of a third-party jar. For instance, IBM
>alphaWorks' XML Security Suite works with Xerces 2.0 beta 2 but not
>earlier or later versions. The Apache XML Security project works with
>the release version of Xalan 2.2 or later. My own XInclude software
>works with Xerces 1.4.0 through 1.4.3 but not earlier or later

A big +1, we asked this sometimes ago in jpackage projects since it's
really confortable to have jar name like log4j-1.1.3.jar, or 
xerces-1.4.4.jar since it help you have ALL versions in the same place
and let you decide which you want to use. Also very usefull when you
want to go from a stable 1.x to a beta 2.x for example.

I forward the request to xml list since it really an important point,
may be not for the developpers but for users and packagers...

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