Own server for Java programms to use the NVidia GPU

unfortunately, no (or, not so easy)
you need to use special api’s / classes to use CUDA/OpenCL code, which are not exposed to the java api

IF you’re good with c++, you can still wrap your gpu pipeline into JNI code, and call that from java

this is cpu only, to use the CUDA optimization, you need a different api – but again, no java bindings ;(