Generate uber jar with modules with different Java versions

Help/Discuss
1

Hi!

I have a project(Root) with modules A, B and C. Root and module A uses java 17 and B and C uses Java 21.

I’m using the shadow plugin (jengelman). When I use shadowJar to generate a uber jar with all modules (including root) task it fails with the message “Unsupported class file major version 65”

2

Where do you get that error?
What is the stacktrace?
What is your goal?
What is your question?