Questions about using Java 3D

Hi everyone (newbie here),

I'd like to develop my skills to become a professional java developer.

I was wondering about your opinion regarding the Java 3d API.  Is it
popular?
>From my google searches it looks like Java3d is most popular in the
mobile
device realm.  Everywhere else it appears quiet.  So for instance I
wanted to
build a 3d applet for my website (to build my ****tfolio).  Do you think
this is
wise?  Or are there better alternatives?

Thanks for any advise,

Dennis.