I've never tried it myself, but I believe you're talking about "Scroller". You can still reach some parts of the old site, and Scroller is found on this page:
http://www.java-gaming.org/Code/code.html
Well, MSIE just wiped my reply with no undo

. But in summary, that isometric thing isn't worth downloading - it's hard-coded to run stuff from f:\somewhere, and there's no packaging, no instructions, and lots of duplicate files and rubbish like that.
Princec's file on the same page is quite good, but sadly yet-another-windows-only affair.