Is there a tool to precompile JAVA to native code?

Question

Java

Good afternoon.
I imagine this:
We have Ubuntu on ARM. We have a JAR nickname.
The compiler creates a .so file and puts all the methods there, making them native, and completely hides the private ones (and in general, everything that can be painlessly hidden is hidden).
We get the same JAR nickname, but without the source code, which will work on Ubuntu ARM.
In theory, everything is ok.
Is there such a thing in nature that is really tested and works?
Thank you.

Answer 1

gcc.gnu.org/java