Java to Python Bind Generator (J2PBG)

Generate Python bindings (wrappers) on Java Classes.

Generates Intellisense friendly Python bindings on Java Classes.
Bindings are based on Pyjnius.
Compatible with Python 3.
Supports overriding of Java Classes and Interfaces from Python.
- Callbacks to Python from Java.

How to run?

The j2pBindCLI can be used to generate Python bindings using java .class files.

java -jar j2pBindCLI-0.1.0-SNAPSHOT-jar-with-dependencies.jar [path to root directory of compiled classes] [output path]

*Note: First follow the instructions in How to Install section.

This example code extends a Java Class using a Python Class.

Create a directory for example code. (say example_code_directory)
Create the subdirectory structure example_code_directory/java/test.
Copy TestClass.java to example_code_directory/java/test.
- Note that TestClass is a Java Class belonging to package test.
- It is an abstract class with abstract methods.
Compile TestClass.java. javac TestClass.java
Navigate to source_directory/j2pBindCLI/target and run java -jar j2pBindCLI-0.1.0-SNAPSHOT-jar-with-dependencies.jar example_code_directory/java example_code_directory.
- Now you have python bindings generated for TestClass.java.
Copy TestApp.py to example_code_directory/python/.
- TestApp.py has class TestClassImpl which extends TestClass.java.
- It overrides some of the methods of the extended Java class.
Run python3 TestApp.py
- This executes a sequence of method calls with print lines explaining the control flow.

Install dependencies
- Java 8.0+ with maven
- Python 3.5
- Cython sudo pip3 install cython
- Pyjnius sudo pip3 install pyjnius
Clone the project and navigate to source directory
Run mvn clean install
If the build succeeds, j2pBindCLI would be located at j2pBindCLI/target directory.