Any Stand alone ZX81 Java emulators?

[blittled]

I know of http://www.vavasour.ca/jeff/ts1000/ but is there any java based ZX81 emulators that do not require a website?

I have personally wanted to learn Java since it is one of the best cross platform languages and my proficiency with C would make it easy. Also I've always wanted to create an emulator. So I was wondering if I would be re-inventing the wheel making a cross platform Java based ZX81 emulator. I realize there are Spectrum emulators in Java. In fact I may download the source code for one to get the Z80 emulation code to start out with.

[blittled]

I have found Steven Holdsworth's JtyOne emulator based on the EightyOne http://www.zx81stuff.org.uk/zx81/jtyone.html. Due to the heighten security of Java 8.40 I cannot run the demo but I have downloaded the source code. Now to learn how to run Eclipse and Swing so I can build a GUI for stand alone operation of JtyOne.

Is there some way of contacting Steven in case of questions or permission to modify his code?