ryanzebian / PyBean

JVM ByteCode interpreter

PyBean

JVM ByteCode disassembler and interpreter implemented in python3

Warning

There be dragons. Not all the specification has been implemented.

Setup

1. Python3 installed.
2. install Java8 running and set JAVA_HOME variable in src/pybean.py

computer:Pybean$ make
cd src/ && python3 pybean.py
INFO:__main__:pool_count 46
INFO:__main__:saved classfile: ../build/classfile.json
code block detected, attempting to run.
...           
invokevirtual [0, 10]
{'locals': [None, 6, 'World!', 'Hello', None, None, None],
 'pc': 23,
 'stack': ['out', 'java/lang/StringBuilder', 'Hello World!6']}

 Hello World!6 

JVM Specification

https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html