also https://github.com/mirkosertic/Bytecoder and https://github.com/i-net-software/JWebAssembly as well as the already mentioned (in some other comment) https://cheerpj.com/

most of them are still experimental, while CheerpJ offers Enterprise support (but it targets the browser).

oh, and let's not forget j2cl https://github.com/google/j2cl