[thingsgoup]

I suspect it’s because manual memory management in Java isn’t built into the language. Is it even possible? I’m not a Java programmer and I don’t know. My understanding has been that the runtime doesn’t expose the memory model to you.

[kaba0]

In a way it does. Java just likes to push most features to methods on special objects, instead of exposing them as native functionality (to avoid backwards incompatible changes).

So it would look something like MemorySegment.allocateNatice(100, someScope). This new API has a runtime ownership model, so by default only a single thread can access this memory address, and it can be freed at will.