More than four years after the formation of the last significant branch interlayer release , which allows you to organize full access of Python-applications to class libraries in the Java language. With JPype from Python, you can use Java-specific libraries to create hybrid applications that combine Java and Python code. The project code is distributed under the Apache 2.0 license.
Unlike Jython, integration with Java is achieved not through the creation of a Python variant for the JVM, but through interaction at the level of both virtual machines using shared memory. The proposed approach allows not only to achieve good performance, but also provides access to all CPython and Java libraries. In the new release, the code of the main module has been completely rewritten, support has been added
unattached streams, improved security, translation of Java exceptions into Python exceptions, changed behavior when converting strings.
Source: opennet.ru