They tell you it’s impossible, but it isn't: Building K8s Operators using Java and Jakarta EE

If you feel like building kubernetes operators using Java and microprofile then Daniels, principle consultant at Bineros, talk at EclipseCon might be of interest.

If you just want the code and skip the talking then check out https://github.com/danpfe/eclipsecon. You can use the repo as a template and get a flying start.