I don't know of any books, but I wrote a 2d game in Java which I lifted from download from the Java Boutique website. At least in 2001 there were tons of games and you could download the source code.

Dragon Quest III HD-2D Remake’s producer Masaaki Hayasaka told our sister site Games Radar, the game he would most like to see reanimated via HD-2D is 1994’s Final Fantasy VI: “Octopath ...