Is there a way to include a csv file within a java program?

Question

I am attempting to create a standalone app and the app uses a local csv file to pull data from. I was hoping to send this app to friends for a niche use but I have realized that should the csv not be included, there is no way of me finding out where they stored the data and the file path for it. I need the csv to be included in the jar file with the code still reading it.

I have tried a file reader loop and importing the file directly to the project but neither have succeeded so far. I am not looking to use OpenCSV unless it is the last option as I would have to rewrite about half the code.

Better to load your files/images as resources: Netbeans Eclipse (including csv files). You could have the best of both worlds: read a file provided by the user, else your own csv as resource in the jar — g00se
– g00se, Commented Nov 24, 2022 at 21:33

queeg · Accepted Answer · 2023-05-02 08:32:45Z

3

You can include the CSV (and any other file) into the jar. A jar file is just a zip archive - you can verify that by renaming it and opening it with any archive viewer.

Now at runtime the file is read-only, and you have to access it via the classpath, not via the filesystem. Here is an example how to access a text file - and any other file also needs to be opened as stream: How to read text file from classpath in Java?

These files that you add to the jar are called resources, and as @g00se already mentioned: Here is how to do it in

edited May 2, 2023 at 8:32

answered Nov 24, 2022 at 22:05

queeg

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