Restricting access to a java program?

Question

linux

I have such a question - how to restrict access to a java program in all places except for the folder to which the file is located and the folders and files that belong to it?

Example:
-Servers
--Loader.jar
-ServerMaxic
--modder.jar
--cfg.json
--DirectoryDira
---...

And how do I make modder.jar not have access to directories other than ServerMaxic and nested in it files / folders, etc. via bash/sh?

Answer 1

Create a user from which you will run the program.
Create a folder where the data will be.
Do a chmod on the data folder
if that's not enough install SELINUX

Answer 2

Wrap your program in a docker container.