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 ...

In Classes and objects in Java, ... Example: Static classes and Java 2D. Java’s standard class library is a runtime library of class files, which store compiled classes and other reference types.

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

But in real-world Java applications, the program itself should decide how an object is initialized. That's why most Java classes provide non-default constructors, also known as parameterized ...

Objects: An object is an instance of a class. When a class is defined, no memory is allocated until an object of that class is created. Objects have states and behaviors. For example, a dog has states ...

A constructor in Java is a special method that is called when an object of a class is instantiated. Constructors are used to initialize the object's state and have the following characteristics: They ...

Java string object example. In Java, a string is an object that represents a number of character values. Each letter in the string is a separate character value that makes up the Java string object.