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Java and Jar files

Posted on 2004-08-27
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Last Modified: 2010-03-31
Hi,
   I've written a small app that uses data stored in  important.jar

   This is in my classpath so everything works nicely. Now I want to package up my app into  mywork.jar - but of course when I run it, it complains about not being able to find the files from important.jar

   Is there an easy way to put them all in the same jar file?  I really only want to give users a single file to work with instead of a small collection :)


thanks in advance!
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Question by:petepalmer
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5 Comments
 
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Accepted Solution

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objects earned 250 total points
ID: 11918782
Assuming you want to create an executable jar, then add a Class-Path attribute to your jars manifest to specify the (relative) location of the other required jar

eg. if important.jar is in same directory then add:

Class-Path: important.jar
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by:sciuriware
ID: 11920369
Why not bundle everything together in ONE jar?
;JOOP!
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Author Comment

by:petepalmer
ID: 11920416
I was hoping there was a way to do it with just one jar as opposed to two. The reason I don't want to take the files out of important.jar is that it's maintained by a friend of mine so I want it to be easy to update. Granted if I use classpath upgrading is simplicity itself - you just copy over the new jar file... but is there no other way? :)


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Expert Comment

by:objects
ID: 11920618
how can you do it with one jar, but without taking the files out of important.jar :)
If you use the appraoch I suggested above then there is no change required to the classpath.
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by:petepalmer
ID: 11920689
I couldn't think of another way either.... couldn't find anything in the docs... but just hoped I was being thick :)

Ah well, two jar files it is then! :)
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