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.

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 ...

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.

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.

In Java, encapsulation basically translates to this simple guideline: “Don’t access your object’s data directly; use its methods.” That is an elementary idea, but it eases our lives as ...

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.