Help with collision detection

Hey everyone, I’m working on a 3D maze game, I’ve done pretty well with it considering I haven’t used java3d before. One major problem I’m having is with collision detection. At the moment I’m walking through walls, and everyone knows that shouldn’t happen. Can anyone direct me with any examples they have created, or they know of any that has used collision detection. My email is anish_shah69@hotmail.com if any one wants to send any source code.

Thanks in advance.

Here is a tutorial on the sliding sphere algo:
http://www.gamedev.net/reference/articles/article1026.asp

If you have got a quake style bsp then this bsp collision detection tutorial might be useful:
http://www.nathanostgard.com/tutorials/quake3/collision/

Or are you only interested in working source code?

yea i’m jus interested in the source code.