i honestly have no idea what a Java sheet is; but if I had to hazard a guess, it's one of the original sheets of paper that a Mr. John Java-Jones used to plan, design, and eventually implement Java upon, back in the year-of-our-lord 1308.
very rare if you can get your hands on one, very rare indeed.
whoever actually "made" java, certainly made it as a tribute to (their addiction to) the strong stuff, i don't think i could do a day's programming without replacing my bodily fluids with caffiene juice.
if i released a programming language, i'd probably call it nicotine.
If i was going to write a programming language I think I would name it Oak. For the oak tree outside my office. Yeah. I think thats the ticket. Oak. I think marketing people could really run with that one.