JPype

(Looking for a Python 3 compatible jpype? See tcalmant's fork)

From the original Website:

JPype is an effort to allow python programs full access to java class libraries. This is achieved not through re-implementing Python, as Jython/JPython has done, but rather through interfacing at the native level in both Virtual Machines. Eventually, it should be possible to replace Java with python in many, though not all, situations. JSP, Servlets, RMI servers and IDE plugins are good candidates.

Once this integration is achieved, a second phase will be started to separate the Java logic from the Python logic, eventually allowing the bridging technology to be used in other environments, I.E. Ruby, Perl, COM, etc ...

This friendly fork applies changes to make the installation easier on OSX and Linux, as suggested by Yuvul Adam , the beautiful people in one of the JPype Stackoverflow postings and all the other CONTRIBUTORS.

The changelog can be found on github.

Known Bugs/Limitations

• Java classes outside of a package (in the <default>) cannot be imported.
• unable to access a field or method if it conflicts with a python keyword.
• Because of lack of JVM support, you cannot shutdown the JVM and then restart it.
• Some methods rely on the "current" class/caller. Since calls coming directly from python code do not have a current class, these methods do not work. The User Manual lists all the known methods like that.

Requirements

Either the Sun/Oracle JDK/JRE Variant or OpenJDK.

Debian/Ubuntu

Debian/Ubuntu users will have to install g++ and python-dev first:

sudo apt-get install g++ python-dev

Installation

Should be easy as

python setup.py install

If it fails...

This happens mostly due to the setup not being able to find your JAVA_HOME. In case this happens, please do two things:

1. You can continue the installation by finding the JAVA_HOME on your own ( the place where the headers etc. are) and explicitly setting it for the installation:

   JAVA_HOME=/usr/lib/java/jdk1.6.0/ python setup.py install

2. Please create an Issue on github and post all the information you have.

Tested on

• OS X 10.7.4 with Sun/Oracle JDK 1.6.0
• OSX 10.8.1-10.8.4 with Sun/Oracle JDK 1.6.0
• OSX 10.9 DP5
• Debian 6.0.4/6.0.5 with Sun/Oracle JDK 1.6.0
• Debian 7.1 with OpenJDK 1.6.0
• Ubuntu 12.04 with Sun/Oracle JDK 1.6.0