Replacing files in jar by files in folder

user_11437514 0
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I have a directory, update, with the same structure as a JAR file Application.jar. Now I want to (programmatically) replace all files in Application.jar with the files in the update folder. Lets say I have the following structure for both directory and jar file:

Application.jar / update
    - TestDir
        - text2.txt
    - text1.txt

When using jar uf Application.jar update/TestDir/text2.txt it creates a new directory in Application.jar - update - and it's going to be added all from there, even worse when using absolute paths (Creating the whole C:\ structure inside the jar file). How can I preserve the structure, is there some way to mark pathToUpdate\update as a root? I know there's the -C parameter, but I don't understand it.

jar java
1 Answers

You have two options.

  1. First change the working directory to update so that the relative path to the 'update' file matches what you want in the jar:

    cd update
jar uf ../Application.jar TestDir/text2.txt

  2. use the -C option:

    jar uf Application.jar -C update TestDir/text2.txt

It's possible the -C option requires that you do: jar Application.jar -C update update/TestDir/text2.txt.

In general, I advise the first option; the second gets tricky once you start using e.g. * and the like.

user_7686440
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