box2d reference

http://box2d.org/
http://code.google.com/p/box2d/downloads/list

http://www.dremsus.com/index.php/2012/01/box2d-game-demo-in-android/
http://thisiswhatiknowabout.blogspot.kr/search/label/JBox2D%20Tutorial

 

A simple demo application to test Box2D physics engine.
https://code.google.com/p/testing-box2d/
https://code.google.com/p/box2d-bodies-digitaldays2011/
https://code.google.com/p/box2d-hello-digitaldays2011/
https://code.google.com/p/box2d-joints-digitaldays2011/
https://code.google.com/p/box2d-shapes-digitaldays2011/