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Jython Essentials
Jython is an implementation of the Python programming
language written in 100% pure Java, so it runs under any
compliant Java Virtual Machine. The secret to Jython's
popularity lies in the combination of Java's libraries
and tools with Python's rapid development capabilities. With
Jython, you can write Python programs that
integrate
seamlessly with any Java code. And like Python, Jython can
be used interactively, so you can get immediate results as
you are programming.
Jython Essentials provides a solid introduction to the
Python language, offering a brief but thorough tour of the
Python concepts you'll need to understand to use Jython
effectively. The book makes frequent comparisons
between Python and Java, with special emphasis on the
different object-oriented semantics of the two languages, so
Java programmers can quickly get up to speed with Jython.
Jython Essentials also covers the various ways in which
Jython and Java can interact. For example, Jython code can
create instances of pre-existing Java classes and call
methods in those instances. You can write Jython classes
that are direct subclasses of existing Java classes
and use introspection to discern the capabilities of
JavaBeans components. This book provides examples of using
Jython with existing Java libraries, including the Swing GUI
toolkit, the JDBC database API, the Servlet API, and various
XML tools. And finally, the book shows how
Jython can be used as a scripting language within a Java
program.
With Jython Essentials, you have everything you need to
start creating applications that mix the best of Python's
interactivity and Java's robust libraries.
Foreword
Preface
1. Introduction to Jython
Jython Requirements
Welcome to Jython
What's Jython Good For?
The Benefits of Jython
The Speed Question
The Rest of the Book
2. Jython Basics
Running Jython
Basic Types
Operators
Numeric Types
Sequences: Lists and Tuples
Strings
Mappings and Dictionaries
Jython Files
3. Jython Control Flow
Statements and Expressions
Assignment
Printing
Blocks
Conditional Logic
Loops
List Comprehensions
Exceptions
Evaluating Code Dynamically
4. Modules and Functions
Modules
Functions
Parameter Passing with Style
Import Statements and Packages
5. Object-Oriented Jython
Creating Classes
Methods
Classes, Instances, and Access Control
Inheritance
Special Methods
6. Using Java from Jython
Basic Object Usage
Automatic Type Conversion
Java Arrays and the jarray Module
Java-to-Python Types: Automatic Conversion
Collection Wrappers
Avoiding Name Collisions
7. Inheriting from Java
Basic Mechanics
Java Interoperation and Overriding
Calling Super Methods and Constructors
8. Reflection and JavaBeans
Bean-Based Reflection
Python-Based Reflection
9. Using Swing
Java Versus Jython
A Calculator
An HTML Browser
An HTML Source Browser
10. Using Java Libraries
JDBC and the Python Database API
Servlets and PyServlet
Jython and XML
11. Jython Standard Library
Using Python Modules
System and File Modules
Regular Expressions
Serialization and Pickling
Unit Testing with PyUnit
12. Embedding Jython Inside Java
Setting Up an Interpreter
Executing Code
Accessing the Interpreter Namespace
Using PyObjects
PyObject Subclasses
Catching Exceptions
Embedding Examples
13. Compiling Jython
Why Compile?
The Compiler in Action
Packaging in Java Archives
Using Jython in Java
A Simple Applet
A. Installing Jython
B. Jython Options and Registry
C. Jython Exceptions
D. Jython and CPython Differences
E. Java-to-Python Quick Reference
Index
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