just like a . folder under the home dir?

I'd also be interested in best practices around this. I'm not aware of a standard, like you suggest @Cody Mikol I think it's reasonable to use e.g.

System.getProperty("user.dir")

to identify user folder in a cross-platform manner, then manage a sub-folder of your own.

Thanks 🙂

There are standards for each platform. I typically check for the XDG-defined environment variables (https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html) first, regardless of the platform. Then, Windows and macOS each have their own conventions for locating these types of directories: • Windows: https://docs.microsoft.com/en-us/windows/win32/shell/known-folders ◦ Windows has environment variables you can check as well; for application state you'd probably want a subdirectory in

%APPDATA%

or

%LOCALAPPDATA%

• macOS: https://developer.apple.com/library/archive/documentation/FileManagement/Conceptual/Fi[…]ProgrammingGuide/FileSystemOverview/FileSystemOverview.html

You might just use a library which can provide you with this information. https://github.com/harawata/appdirs

For unix, most of app state should go to ~/.config

I doubt it unless Linux is not Unix 🙂 https://specifications.freedesktop.org/basedir-spec/latest/ar01s03.html