In Java, nested classes are categorized as either static member classes or inner classes. Inner classes are non-static member classes, local classes, or anonymous classes. In this tutorial you ...

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 full Java constructors tutorial quickly provides a deep understanding of this important programming concept. A Java constructor is a special method that lets developers simultaneously create ...

public class HelloWorld { public static void main ... One more easy concept we can introduce in this Java tutorial is how to use methods. This will give you a bit more idea regarding the way ...

Learn about serialization in Java with our comprehensive tutorial. We provide examples ... of the ObjectOutputStream and ObjectInputStream classes, and the implementation of marker interfaces ...

The POJO will be serialized and deserialized to and from the local file-system. For this Java serialization tutorial, we will to create a simple Score class. This class will model the score of a ...

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 ...