The Open Source Physics project seeks to create and distribute curricular material for physics computation and computational physics education at all levels.
a high performance scene graph based graphics API. Much of the inspiration for jME comes from David Eberly's book 3D Game Engine Design. jME was built to fulfill the lack of full featured graphics engines written in Java.
Phys2D is a 2D physics engine written in Java (1.4). It is essentially a port and rework of the GDC 2006 presentation from Erin Catto plus some extensions