At the end of his life he began to be deeply involved in a theological meditation, but even before he was fascinated by the YiKing. He was using the oracle as a drug to solve some of the problems coming from his schizophrenic mind. He used it to write some of his books, a way for him to decide for the future of his characters.
Some of his books are talking explicitly about the YiKing, the most famous is The Man in the High Castle, and many people have discussed about its ending using the few hexagrams quoted.
So as you have maybe already guessed this applet is a kind of joke for me, but it's also something really deep. Consider this as a "clin d'oeil" to the great Master, and don't forget that Java == Ubik !