9 reasons Java is still great
Now, the JVM is undergoing its most significant transformation yet. I wrote about Project Valhalla a while ago, describing it as Java’s epic refactor. Today, that prediction is a reality. For decades, Java objects paid a memory tax in the form of headers and pointers. Valhalla removes this by introducing value classes, allowing developers to create data structures that code like a class, but work like an int.
Value classes flatten memory layouts and eliminate the cache misses that modern CPUs hate. Moreover, they bring all Java types into a single mental model (no more “boxing”). Project Valhalla proves the JVM isn’t just a static runtime but a living system, capable of replacing its own engine, even while flying the plane.
9. AI integration and orchestration
When the AI boom first hit, Python wrote all the models but Java still ran the business back end. Now, Java is fast becoming the universal AI layer, merging business and AI technology.
