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 ...

Dragon Quest 3 HD-2D Remake features new story elements, Performance and Graphics modes on PlayStation 5 and Xbox Series X and S, and more. Speaking to Famitsu and translated by @Genki_JPN on X ...