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

Here's everything you need to know about initializing Java classes and objects before executing them in the JVM.

Learn how to apply polymorphism to create concurrent classes in Java using interfaces, abstract classes, and method overriding.

But the class that all classes ultimately and implicitly extend from is called Object. In this course, as in most technical content, we use the term "object" to refer to the instance of a class. We ...

An object-oriented programming language with some lists of functional programming in it and actually more and more. Object-oriented programming means four things abstraction, capsulation, inheritance ...

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.

The Java serialization tutorial In this Java serialization example, we will use both the ObjectOutputStream and the ObjectInputStream to save and retrieve the state of a simple JavaBean. The POJO will ...

Once we have learned the basic array material, we will discuss wrapper classes and the Object class. Putting all this information together, we will learn how to represent two simple, general, and ...