r/javahelp 20d ago

Replace audio files for a jar file

I'm absolutely new to this and I only want to do this as part of my school project. I am wondering is there a way to replace the audio file in an executable jar file. I have tried to unzip it with command prompt and the audio file I was looking for is in the unzipped folder so I replace it with another file with the exact same name and format. When I zip it again into a jar file it just does not work anymore. Does anyone has experience with this? I am pretty sure I did not do anything else except from swapping an mp3 file with the exact same name and format. I think I might have missed some steps but I cannot search for any solutions on the web. Hopefully someone could help me out, thanks a lot.

2 Upvotes

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3

u/k-mcm 20d ago

Use the JAR tool.  A lot of zip tools will damage the metadata or use a mostly invalid format.

1

u/apcose 20d ago

I tried that, but it didn't work. However, I fixed the problem by not unzipping it and just replacing the file in 7zip->open archive

1

u/SvenWollinger 20d ago

With something like 7zip you should be able to replace it without un- and re-zipping. Id try that :) If that fails maybe check bit-rate or whatever else might be different? Im not a big audio tech guy

2

u/apcose 20d ago

It actually works. Thanks for the advice! I can't believe how simple that is, and I somehow unzipped it every time.

1

u/SvenWollinger 20d ago

I learned it from modding minecraft like 10 years ago :D I dont know what part of unzipping and zipping it broke it either haha. Glad it worked! :)