Will and should Java 7 have closures has been a topic for heated debate & discussion for quite some time now. It now looks like the decision has been made, however how closures will be included and used in Java 7 is still uncertain. While the ‘if’ debate seems to have been settled, the debate & confusion as regards how, what, when should closures be added to the Java language continues.

This version of Jython has support for most of Python 2.2 and numerous features from Python 2.3 also JDK 1.4.