How to insert a class file inside 100s of jar

Hi ,
have 100s of jar file where I need to insert a class file to them in bash script.
what is the best way to automate that?

1. Is it possible to inject without extracting the jar?
2. Would like to find <file_pattern>.jar recursively and inject
3. pls help with sample scripts

Thanks in advance
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ste5anSenior DeveloperCommented:
Just for curiosity: Why?
enthuguyAuthor Commented:
Just for a POC, I would like to perform this.  
I understand this may not happen in real world ( may one or two jars
enthuguyAuthor Commented:
Or just assume, we will inject a properly file in a jar
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Properly read manual of jar utility?
enthuguyAuthor Commented:
have used zip -u

and it worked for me.


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enthuguyAuthor Commented:
it worked for me
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