Apache Harmony's Approach to Implementing Java SE Platform
TS-3752

Apache Harmony is an incubator project of the Apache Software Foundation building a compatible implementation of Java Platform, Standard Edition 5 (Java SE 5). The project's goals include creating an open, modular architecture that supports interoperability between multiple implementations of the Java Virtual Machine (JVM) and multiple implementations of the Java SE class library. Defining a strong modular architecture enables a disparate set of developers to collaborate on producing a compliant Java technology-based implementation.

This session describes techniques for defining the major functional areas of the Java SE platform and gives a status report on the implementation's modularization effort to date. The presentation shares some of the technical lessons learned in the Apache Harmony project to facilitate interoperability between open source and proprietary Java VMs and class library code. It also demonstrates how the VM interface and class library architecture achieve the right degree of independence while ensuring that implementation choices are not compromised.

The presentation is aimed at practitioners and developers with an interest in open source innovation involving the Java platform and includes a demo of the Harmony code to date.

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