java file to bytecode compiler (javac)

[sPyOpenSource]

1. java asm compiler: see inspiration in this project
2. workflow: java -> bytecode -> ir: java2llvm -> native compiler (llvm)
3. SJC - a compiler that compiles a subset of Java directly to native code, eliminating the need for bytecode and virtual machines.

• rust to bytecode
• java to native code
• java to bytecode