Explore the challenges and insights gained from porting Doom 3 to Java in this conference talk. Delve into the fundamentals of Java and game development, examining why Java isn't a major player in video game creation despite its widespread use. Learn about the differences between Java and C++, including operator overloading, unsigned primitives, and immutability. Discover areas where Java could improve by learning from C++, as well as instances where Java surpasses its predecessor. Investigate unfulfilled promises in Java's development and gain valuable lessons applicable to software engineering and language design. Gain a deeper understanding of memory management, type conversion, and floating-point operations while exploring the intricacies of game engine development.