Cor Blimey! A Java Spectrum emulator!

Sometimes as an ex-demo coder, one sees something these days that knocks one off one's feet. So 4-bit scrolling Overscan and 16Khz Soundtracker on the 8Mhz Atari ST was cool, but it's hard to be impressed in the same way these days, given the 300Mhz monsters that run C++ faster than hand-crafted 68000.... until... Who in their right mind would code a Spectrum Emulator in Java that actually runs old games??? Not only that, but source code is provided which compiles with jikes. Interestingly the resulting class files are slower than those on the website -- some optimization cases must be being missed (hint David ;-)). Apparently, this is the beginning of a trend with an ATARI ST emulator also being written. Anyone know how to get Kaffe to run an applet? (under Netscape it runs at 10% of a real Spectrum's speed)