by Francisco Esquembre is possibly a suitable example for u to study and discuss on.

/htdocs/ntnujava/ejsuser/14019/users/sgeducation/lookang/MultipleCollisions_pkg/MultipleCollisions.propertiesFull screen applet or Problem viewing java?Add to exception site list
Press the Alt key and the left mouse button to drag the applet off the browser and onto the desktop. This work is licensed under a Creative Commons Attribution 2.5 Taiwan License
Download EJS jar file(875.9kB):double click downloaded file to run it. (14 times by 11 users) , Download EJS source (8 times by 6 users) View EJS source