Apache Harmony is retired at the Apache Software Foundation since Nov 16, 2011.

The information on these pages may be out of date, or may refer to resources that have moved or have been made read-only.
For more information please refer to the Apache Attic

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Apache Harmony Class Library

The following documentation links are specific to the class library effort underway at Apache Harmony.

Class Library API reference - externally hosted API reference

Developing and Building the Code

• Getting Started For Contributors
  Describes how to get configured to build and work with the Apache Harmony source code.
• General package completion
  Provides information about completeness of the packages and gives a hint where to start.
• Development with the Eclipse™ IDE
  Describes how to set up Eclipse to develop the class library code.
• Harmony Development Kit
  Development bundle providing all jars, native binaries, dependencies and header files to aid in Harmony development.

Project Conventions

• Java Package Naming Guidelines
  Guidelines for Harmony package naming convention.
• Testing Conventions in the Apache Harmony Classlib
  Placement and package naming conventions for different types of Harmony class library tests.
• Compatibility Guidelines
  Guidelines for ensuring that the Harmony class library is compatible with other Java implementations.
• Framework for Testing Serialization
  Approach for testing serialization compatibility with other certified implementations, Harmony backward compatibility, placement and naming conventions for resource files.
• Harmony-dev agreements
  Summary of agreements and recommendations worked out on harmony-dev mailing list.

Architecture and Guides

• Harmony ASN1 Framework
  Introduction to the ASN.1 (Abstract Syntax Notation) framework with an overview of ASN.1 types and encoding rules focusing on the characteristics of the current implementation.
• Harmony Regular Expression Framework
  Overview of the java.util.regex package and implementation architecture focusing on the performance improvement aspects.
• Harmony DNS Service Provider
  Implementation description of the DNS service provider for the Java Naming Directory Interface (JNDI) including a package overview, a design description and a guide to using the provider.
• RMI Registry Service Provider
  Description of the functionality of the DRL RMI Registry Service Provider for the Java Naming Directory Interface (JNDI) giving details on the provider design.
• Harmony Abstract Window Toolkit Framework
  Description of the AWT (Abstract Window Toolkit) framework covering major design features and internal implementation specifics, such as the event handling mechanism, the focus dispatching flow, appearance handling with custom visual themes and multi-threading support.
• Harmony Java 2D implementation
  Introduction to the Java two-dimensional (2D) graphics and image processing technology implementation focusing on the internal specifics of implementation.
• Harmony VM Porting Guide
  Description of the native code modules in the Harmony class library, including the interface to the virtual machine and interface to the operating system.

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