OpenMap is a JavaBeans-based GIS toolkit for building applications and applets needing geographic information. Using OpenMap components, you can access data from legacy applications, in-place, in a distributed setting. At its core, OpenMap is a set of Swing components that understand geographic coordinates. These components help you show map data, and help you handle user input events to manipulate that data.
NinjaRMI is a free, ground-up reimplementation of Java Remote Method Invocation. It supports a number of features not found in Sun's RMI suite, including new communication semantics (one-way, unreliable, and multicast RMIs) and API enhancements (e.g., the ability to determine the hostname of the peer in an RMI connection). And, because all of the source code is provided, you're free to add new features as needed.
The Oracle (formerly Sun) Java Platform, Standard Edition (Java SE or JSE) allows you to develop and deploy Java applications on desktops and servers as well embedded and real-time environments. The Java Development Kit (JDK) contains the essential compiler, tools, runtime libraries, and APIs for developers writing, deploying, and running applets and applications in the Java programming language. The Java Runtime Environment (JRE) contains the runtime libraries and tools for running applets and applications.
The Kiwi Toolkit is a foundation class library containing many useful classes that complement the Java Foundation Classes (JFC). It includes many classes and components that were not provided with the JFC, such as a TreeTable component, a DateChooser, an MVC charting package (bar charts, line charts, pie charts), a plugin framework for Java, an application resource manager (for loading images, icons, HTML pages, audio clips, and other resources from JAR files), a better internationalization API, and much more.
DocWiz allows you to easily add JavaDoc comments to your Java source code. With DocWiz, there's no need to tediously hand-format JavaDoc comments, adding tags and comment structures for each method. DocWiz provides a list of all the fields, methods, interfaces, and classes defined in a Java source file. You can click on any of these code elements to display a fill-in form for information about code elements. In addition, DocWiz shows you an icon for uncommented code segments.
GNU Classpath (essential libraries for Java) is a project to create free core class libraries for use with virtual machines and compilers for the Java programming language. It includes all native methods and core classes necessary for a completely functional execution environment.