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Java's syntactic and library support for these components tends to cause the above concerns to be mixed with each other, with other concerns, and with low-level implementation details. This means that the code is cluttered, verbose and does not express intent very well. Jedi aims to repair this by providing a library of routines for filtering, iteration, conversion from one collection type to another, first order logic functions, etc. It makes extensive use of higher order functions and closures (also known as 'blocks' or 'lambdas' that can be implemented manually or by annotations.

The Software Testing Automation Framework (STAF) is an open source, multi-platform, multi-language framework designed around the idea of reusable components, called services (such as process invocation, resource management, logging, and monitoring). STAF removes the tedium of building an automation infrastructure, thus enabling you to focus on building your automation solution. The STAF framework provides the foundation upon which to build higher level solutions, and provides a pluggable approach supported across a large variety of platforms and languages. This component contains the STAF Java API (http://staf.sourceforge.net/current/STAFJava.htm ) only. For more information see http://staf.sourceforge.net/ .

JFace is a UI toolkit with classes for handling many common UI programming tasks. JFace is window-system-independent in both its API and implementation, and is designed to work with SWT without hiding it. JFace includes the usual UI toolkit components of image and font registries, text, dialog, preference and wizard frameworks, and progress reporting for long running operations. Two of its more interesting features are actions and viewers. The action mechanism allows user commands to be defined independently from their exact whereabouts in the UI. Viewers are model based adapters for certain SWT widgets, simplifying the presentation of application data structured as lists, tables or trees.

J2EE integrated development framework,for the rapid build enterprise applications.Based on Struts,Spring,Hibernate constructed to provide Web systems development functions commonly used components. Simply configure can be solved the general problems in the process of developing encountered. For example,already has built in login interface,user and role management,base AOP paging,logging feature and a lot more. It's a Java package, a class library for Java programmers. It's not an application for end-users in itself, but something that programmers can embed into their products.