Jython! - 2-week heads-up for next PySIG meeting, 27 Oct 2005, Manchester

Bill Sconce sconce at in-spec-inc.com
Wed Oct 12 20:24:01 EDT 2005


The next PySIG meeting is two weeks + 1 day off, and will again be
held in Manchester - 7:00 PM at the Amoskeag Business Incubator on
Thursday, 27 October 2005.

This month's topic: Jython!

by our own Kent Johnson.

Kent is soliciting suggestions for specific topics (on the PySIG
list).  In the meantime here's a synopsis about Jython in the large
from the project's home page.  Jython should be of interest to 
anyone who uses or wants to know about either Python or Java.  I
particularly like the "typically 2-10X shorter" part, having worked
on Java projects in a former life...

-Bill


_______________________________________________________________________
http://www.jython.org/docs/whatis.html

What is Jython?

Jython is an implementation of the high-level, dynamic, object-oriented
language Python seamlessly integrated with the Java platform. The
predecessor to Jython, JPython, is certified as 100% Pure Java. Jython
is freely available for both commercial and non-commercial use and is
distributed with source code. Jython is complementary to Java and is
especially suited for the following tasks:

    * Embedded scripting - Java programmers can add the Jython libraries
        to their system to allow end users to write simple or complicated
        scripts that add functionality to the application.
    * Interactive experimentation - Jython provides an interactive
        interpreter that can be used to interact with Java packages or
        with running Java applications. This allows programmers to
        experiment and debug any Java system using Jython.
    * Rapid application development - Python programs are typically
        2-10X shorter than the equivalent Java program. This translates
        directly to increased programmer productivity. The seamless
        interaction between Python and Java allows developers to freely
        mix the two languages both during development and in shipping
        products. 

There are numerous alternative languages implemented for the Java VM. 
The following features help to separate Jython from the rest:

    * Dynamic compilation to Java bytecodes - leads to highest possible
        performance without sacrificing interactivity.
    * Ability to extend existing Java classes in Jython - allows
        effective use of abstract classes.
    * Optional static compilation - allows creation of applets,
        servlets, beans, ...
    * Bean Properties - make use of Java packages much easier.
    * Python Language - combines remarkable power with very clear
        syntax. It also supports a full object-oriented programming
        model which makes it a natural fit for Java's OO design. 

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