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 ...

Classes and objects in Java must be initialized before they are used. You’ve previously learned that class fields are initialized to default values when classes are loaded, and that objects are ...

How to Draw Pixels in Java. Java's Graphics2D class provides methods to draw primitive shapes, such as lines, rectangles and ellipses. It lacks a method for drawing pixels. You can color a single ...