It is a class library for editing bytecodes in Java it enables Java programs to define a new class at runtime and to modify a class file before the JVM loads it. Javassist - Javassist (Java programming assistant) is a load-time reflective system for Java.

It uses XML to describe the build process and its dependencies. Ant - Ant is a software tool for automating software build processes.Roller supports all of the latest-and-greatest weblogging features such as comments, WYSIWYG HTML editing, page templates, RSS syndication, trackback, blogroll management, and provides an XML-RPC interface for blogging clients such as w:bloggar and nntp//rss. The Roller Weblogger - A server-based weblogging software & a web application that is designed to support multiple simultaneous weblog users and visitors.AspectJ enables the clean modularization of crosscutting concerns such as: error checking and handling, synchronization, context-sensitive behavior, performance optimizations, monitoring and logging, debugging support, multi-object protocols. AspectJ - AspectJ is a seamless aspect-oriented extension to the Java programming language, Java platform compatible and easy to learn and use.Open Source Aspect-Oriented Frameworks in Java The code does some Ajax magic to make it feel like the execution is happening on the browser, but in reality the server is executing the code and DWR is marshalling the data back and forwards. DWR works by dynamically generating Javascript based on Java classes. It allows code in a browser to use Java functions running on a web server just as if it was in the browser.

DWR - DWR is a Java open source library which allows you to write Ajax web sites.

Open Source Software in Java Open Source Ajax Frameworks

Free java source code