A 100% Java 2D collision detection and physics engine. Designed to be fast, stable, extensible,
and easy to use. dyn4j is free for use in commercial and non-commercial applications (see the
New BSD License
he project comprises over 1,000 JUnit test cases, a GUI test application called Sandbox, two example
applications (ExampleGraphics2D and ExampleJOGL), Javadocs, forum, and more!