Java Open Source Projects Directory

...dedicated into Java open source projects

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General Purpose Libraries


WinRun4j is a java launcher for windows. It is an alternative to javaw.exe and provides the following benefits:

 * Uses an INI file for specifying classpath, main class, vm args, program args.
 * Custom executable name that appears in task manager.
 * Additional VM args for (eg.) more flexible memory use.
 * Built-in icon replacer for custom icon.
 * Built-in pre-VM splash screen with auto-hide.
 * JNI access INI file and splash screen.



JTimepiece is an advanced library for working with dates and times in Java. Features include: reduces number of objects created when working with multiple date/times, methods for computing difference between two date/times, support for time zones, leap year and daylight savings, methods for converting between string and date/times, methods for adding and subtracting to and from date/times, methods for easily retrieving individual parts of date/times, no dependencies to other non-standard Java libraries, compatible with J2SE 1.2 and above.



JGAP (pronounced "jay-gap") is a genetic algorithms component written in the form of a Java package. It provides basic genetic mechanisms that can be easily used to apply evolutionary principles to problem solutions. The ground is laid for introducing Genetic Programming to JGAP in the near future! JGAP has been written to be very easy to use "out of the box," while also designed to be highly modular so that more adventurous users can easily plug-in custom genetic operators and other sub-components.



Retrotranslator is a Java bytecode transformer that translates Java classes compiled with JDK 5.0 into classes that can be run on JVM 1.4. Supported features: generics, annotations, reflection on generics and annotations, enums, autoboxing, for-each loop, varargs, static import, concurrency utilities, collections framework enhancements.



The JADE library provides "Context Programming" which allows: - Objects to be allocated on the "stack" to avoid garbage collection and provide faster execution speed (PoolContext). - Automatic concurrency in low level method to take advantage of multi-processors (or hyper-threading) in a transparent manner (ConcurrentContext). - Thread-based inheritable local/global settings (LocalContext). This library also provides - Struct/Union classes for interoperability with C/C++. - A math package with the first (and unique) generic Matrix class to solve linear systems of any kind. - Physical quantities for which the dimension checking is done in the form of class-type checking (e.g. the division of a length by a duration returns a velocity instance). - Real-time XML parser with no dynamic object creation (the world fastest by a factor 2-3x) And much, much more...



Java applications are typically deployed in multiple environments and platforms, each requiring some unique configuration. JFig gives developers a simple yet powerful tool to manage their applications configuration. It allows them to:

 * Store application configuration in one common repository of XML files
 * Access configuration data using one common,
 * Easily define multiple configurations, dynamically modifying those variables that need to change in different situations
 * Eliminate the error prone practice of defining the same configuration variables in multiple locations
 * Ease the management, deployment, and control of configuration files



Jodd is a generic purpose open-source Java library. It helps in development of Java applications, both stand-alone and server-side. You may think of Jodd as swiss army knife for Java: small, sharp and with plenty handy gadgets included. Jodd contains many useful and ready to use features: it provides Java beans manipulation, loads beans with ease from various sources, simplifies JDBC connectivity and code, profiles sql queries, manages date and time, manipulates and format Strings, searches files on disk, helps with handling servlet requests. Additionally, Jodd contains small, yet useful mvc2 JSP-based framework. And there is more inside...



Line is a Java library for handling console input. It is similar in functionality to BSD editline and GNU readline. People familiar with the readline/editline capabilities for modern shells (such as bash and tcsh) will find most of the command editing features of JLine to be familiar.


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