Dear Mr.Hwang

I'm a student majoring in CS. I'm preparing a code of Kepler's law.

Luckly I found your homepage and saw the simulation. That's really cool and great.

I tried your simulation for a long time and became curious how it was implemented.

If it's possible, could you send me the source code of the simulation?

That's would be greatly helpful to know the Kepler's Law and the Java programming both.

Thanks in advance