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 ...

Finally, we learned that everything in Java is an object, except primitive data types. Because so much of this programming style involves objects and classes, we will now look at each of these ...

Java 25 introduces Compact Object Headers (JEP 519), delivering up to 30% CPU savings and reduced memory usage for applications with small objects. This user-friendly feature compresses object headers ...

In Java, the ORM layer converts Java classes and objects so that they can be stored and managed in a relational database. By default, the name of the object being persisted becomes the name of the ...

Sealed classes, proposed in JEP 409 and available since Java 17, let developers limit and control how deeply a component's type hierarchy can extend. With sealed classes, a developer can essentially ...

But they’ve been steadfast in that Java remains a strongly object-oriented language where everything is, indeed, an object. It’s possible to write code that is awesome or awful in any paradigm.