db4o is an object database for Java and all .NET environments. Its features include ACID transactions, automatic class schema recognition, query-by-example, a S.O.D.A. object querying API, native queries, LINQ support on .NET, callback methods, memory files, cascade-on-delete, multi-threaded access, and Java Webstart and servlet support.
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.
ITISSL is a Java/JNI implementation of Sun's SSL Reference API. It is based on SSLeay or its successor OpenSSL. It requires Java 2 and has been tested on Linux, Solaris and WinNT. ITISSL comes with ready-to-use RMI classes, tools for secure RMI as well as a hotjava-wrapper (called shotjava) for using hotjava with strong crypto. ITISSL is distributed as source (no special linux-packages).
JODE is a Java package containing a decompiler and an optimizer. The decompiler takes class files as input and produces something similar to the original Java file, and the optimizer transforms class files in various ways with can be controlled by a script file. It supports the following operations: Renaming class, method, field and local names to shorter or unique names or according to a given translation table, removing debugging information, removing dead code (classes, fields, methods) and constant fields, and optimizing local variable allocation.
KOJAC is a set of Java classes implementing optical elements and optics laws in order to build and simulate optical systems. It is also aimed at being a demonstrator of optics for educational purposes. Optical systems are composed of objects with defined properties that may be modified by the user through the applet's buttons and scrollbars. Such basic devices are lenses, apertures, interfaces, and may be themselves composite sets of other elements. KOJAC is able to do exact raytracing in 3 dimensions, taking into account the wavelength of the rays, and simulating real materials.