Java developers have spent decades working with a basic assumption about objects: every object has its own identity. Now, OpenJDK developers are preparing to loosen that rule with JDK 28.

Most Java developers who come from a C/C++ background have probably at one time wished for a Java equivalent of sizeof(). Although Java lacks a true sizeof() equivalent, the Instrumentation interface ...

A class like Person.java is often a data class that will need to be used in comparisons and possibly hashCode-based collection keys. It is important to create equals (Object) and hashCode () ...

Project Valhalla is developing inline classes to improve affinity of Java programs to modern hardware Inline classes enable developers to write types that behave more like Java's inbuilt primitive ...

Object-oriented systems are usually partitioned into layers of related responsibilities and only dependencies in one direction are allowed, from higher layers (more specific, less reusable) to lower ...

I've been scouring the Web looking for info on optimising the memory usage of Java and have come up with a few items of interest. Primitive arrays don't have a full object overhead but I have been ...