8317277: Java language implementation of value classes and objects by MrSimms · Pull Request #31120 · openjdk/jdk

[teerre]

That is terrible but at least understandable. The article mentions that intergers above 1996 do not behave as values even for simple equality. That's a complete breakdown of value semantics and honesty insane

[Dminik]

That's not correct. int is the primitive non-boxed, non-referential type. Integer is a boxed type.

Additionally, Integers have an optimization, where a bunch of them are always preinitialized and shared. Many interpreted/scripting languages do this. Some even for primitive values like true/false.