Here's how to make classes, fields, methods, constructors, and objects work together in your Java programs.

One of the features that make Java so powerful, is its object-oriented structure. This means that Java uses classes and objects to create more scalable, modular, and organized code.

We could move all the code from the SliceablePerson class into PersistentPerson if we wanted to minimize the number of java source files and/or give the appearance of having a two level domain. The ...

Last time, in ”Transitioning into object-oriented programming using Java,” we learned that for a programming language to be truly object-oriented, it should support information hiding ...

Reference objects aren't just useful when memory is at a premium; they can also be used to provide slick caching abilities to any application.

Sealed classes in Java let developers limit the creation and use of subclasses and preserve the class hierarchy. Here is how sealed classes in Java work.

UML is used as a representation of the Java programming language. Using sample class and sequence diagrams, you can see how UML conveys unambiguous code-mapping information to developers.

Copying objects is a common Java programming operation that has one serious trap. Here's how to avoid copying from an object reference and only copy the instance and values you want.