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Jython Essentials Paperback – 31 Mar 2002

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In examining this valuable scripting extension to the Java programming model, this fills a much needed gap in the information surrounding this language. -- James Richards, GameJUG, August 2002

About the Author

Samuele Pedroni is one of the main Jython developers. He holds a CS flavored diploma in mathematics from the ETH Zurich (Swiss institute of technology in Zurich). He is now a teacher and research assistant at the Institute of Theoretical CS. He plans to come to the US for a PhD in the field of dynamic languages and dynamic compilation. He came to Jython with the interest in improving it with respect to Java importing and reloading. He has developed several important patches related to java integration, classloaders, and the reworking of java/python importing rules and design.

Noel Rappin has a Ph.D. in computer science from the Georgia Institute of Technology, where his research included methods for teaching Object-Oriented Programming and Design. He has extensive production experience in both Java and Python. Noel also contributed an introductory chapter to the book Squeak: Open Personal Computing and Multimedia (PH).

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Front Cover | Copyright | Table of Contents | Excerpt | Index | Back Cover
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6 of 6 people found the following review helpful By Andreas Kaempf on 2 Aug. 2002
Format: Paperback Verified Purchase
This volume is an excellent and practical guide to using Jython. It has good coverage of how Jython works under the hood, including how to access Jython internals from within Java and vice versa, and it also offers a useful introduction to the Python language for those who need this. I found it invaluable over the last few months while building a project that embeds an interactive Jython interpreter within a larger Java program. Highly recommended, especially considering how compact it is!
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Most Helpful Customer Reviews on (beta) 7 reviews
10 of 11 people found the following review helpful
Informative, but poorly presented 14 Mar. 2003
By The Last Person You'd Expect - Published on
Format: Paperback
I found the book to be informative in learning JPython, but it seemed to have ignored the most practical use-cases for JPython, light scripting and unit testing, and kept suggesting JPython as an alternative for working in Java. In addition, I felt the book was poorly (or boringly) written and that the authors failed to draw on any significant amount of experience in writing the book.
I would have preferred a book that wrote of JPython as a scripting language for Java and that offered advice on how best to leverage JPython for this purpose. I recommend taking a hard look at the other titles before purchasing this one.
OK, I'm adding a paragraph to this review after owning the book for a few weeks. It IS a very helpful book and I'm raising my rating from 2 to 4 stars. Perhaps I was thrown off at first by the succinctness of the text, but I've come to find that it makes it a great reference book. I'm already a half-way experienced programmer and do not need the filler and the explanation of concepts that thicker books probably provide.
Also, there is a helpful section on unit testing which I'd missed (It wasn't placed very well in the book) and python is a flexible enough language that someone should be able to figure out different ways to unit test without the section.
5 of 6 people found the following review helpful
Helpful, but poor explanations 15 Mar. 2009
By Easther Crescent - Published on
Format: Paperback
The book is definitely helpful in understanding how Jython works, but the explanations should be made in a much more user-friendly way with more examples. Often I found myself left in the fog. The book sometimes assumes things without explaining. For instance, for simple functions like the following (p. 113):

>> import jarray
>> jarray.array(['crystal', 'ball'],java.lang.String)

you need to import java.lang.String before calling it. I didn't know that but the book doesn't explain that.

Also the book doesn't make clear that to import some java classes you have to include .jar file in the sys.path. It does mention .jar files but should make clear and emphasize that you must include it as a necessary step and also show how to do that. It took me a lot of agonizing and asking around to finally figure these out.
8 of 10 people found the following review helpful
Good language coverage, but awkward. 9 Dec. 2003
By A Customer - Published on
Format: Paperback
This text has good coverage of the language features, but the presentation and organization is poor. If you're a Java developer looking to pick up jython quickly, I'd suggest "Jython for Java Programmers" instead.
8 of 12 people found the following review helpful
Superb summary of CPython 2.2 features 10 Jun. 2002
By A Customer - Published on
Format: Paperback
For someone who's been working in Cpython 1.5 thru 2.1, the 1st 5 chapters are an excellent, succinct language refresher and intro to new features in 2.2: nested scopes, generators, etc.
This book does assume pretty solid grounding in python. If you don't have that, start with:
Chun: Core Python
Lutz: Learning Python
or Harms/McDonald: Quick Python
Initial step by step process has been good so far 12 Sept. 2015
By James R. Schmidt - Published on
Format: Paperback Verified Purchase
Shipped quickly. Since I'm not a Computer Science Engineer, I have to lookup a lot of terms I'm not familiar with. Initial step by step process has been good so far.
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