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 order to run Java applications, the JVM depends on the Java class loader and a Java execution engine. Everything in Java is a class, and all Java applications are built from classes.

Imagine you are an expert object-oriented Java developer who meticulously crafts code the way an artist cares for their masterpiece. You believe clean code is an absolute necessity. Classes with clear ...

A Java constructor is a special method that lets developers simultaneously create instances of classes and initialize instance variables. The syntax of a Java constructor is simple. For the most part, ...

The release of Java SE 15 in Sept 2020 will introduce "sealed classes" (JEP 360) as a preview feature. A sealed class is a class or interface which restricts which other classes or interfaces may ...