Classes, fields, methods, constructors, and objects are the building blocks of object-based Java applications. This Java tutorial teaches you how to declare classes, describe attributes via fields ...

This post explains how to use classes in Java to build objects and organize your code. Also learn: constructors, static methods, and more!

In Classes and objects in Java, you learned how to declare static fields and static methods as members of a class, and in Class and object initialization in Java, you learned how to declare static ...

Java currently supports only two types of value: primitives and object references. Project Valhalla extends this by introducing inline classes which are a new form of type that exhibit some ...

Class – Everything in Java is associated with classes and objects. Being a user-defined blueprint, a class in simple terms represents the data structure which is used again and again.

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 ...

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 ...

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.

However, the Java Platform provides a data structure that greatly simplifies the use of reference objects like this, called the java.util.WeakHashMap class. WeakHashMap works exactly like a hash ...