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How to add a class to a .jar file

Posted on 2011-02-17
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Last Modified: 2012-05-11
I have a Java program that has many .jar files.  I recently received two class files that need to be added to one of the .jar files.   How can I add these to a jar file?
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Question by:jbaird123
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7 Comments
 
LVL 9

Expert Comment

by:rawinnlnx9
ID: 34920287
Here is this explanation of it though. It goes into much more detail.

http://www.lkn.ei.tum.de/arbeiten/faq/man/JAVA-tutorial/jar/basics/update.html
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LVL 92

Expert Comment

by:objects
ID: 34920719
jar uf <class file name> <jar file name>

Make sure you include the class in its package/folder structure
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LVL 92

Expert Comment

by:objects
ID: 34920727
oops, wrong way around. should be:


jar uf <jar file name> <class file name>
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Accepted Solution

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calboronster earned 2000 total points
ID: 34924945
To make it very very simple..

rename the file to .zip
open and extract with winzip or any zip software (a folder structure will be extracted)
copy your file in the required folder location
zip the folder back to the same name as your jar and you are done.

Remember the folder structure after zipping should be exactly the same as before for things to work.
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Author Closing Comment

by:jbaird123
ID: 34960609
Thank you.
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LVL 2

Expert Comment

by:calboronster
ID: 34960642
Thank you jbaird for the grade and the points.
Have a nice day.
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