Java3D Program Excution Exception

[Deepali Aphale]

Hello,

I installed Java 3D, and tried running the example from j2sdk1.4.0\Demo directory.The program is getting compiled, but when I try executing using 'java' command I get the error
Exception in thread "main" java.lang.UnsatisfiedLinkError: C:\Program Files\Java
\j2re1.4.0\bin\J3D.dll: One of the library files needed to run this application
cannot be found.
I tried to introduce C:\Program Files\Java\j2re1.4.0\bin in classpath and path but still the problem exists.
Please tell me how to proceed.
Thanks in Advance