Here's how to make classes, fields, methods, constructors, and objects work together in your Java programs.

The Java tutorial Java 101: Classes and objects in Java introduces the fundamentals of Java classes and objects, including how to declare classes, describe attributes via fields, describe ...

Benefits of unnamed classes and instance main methods Instance main methods and unnamed classes, coming in Java 21, will forever change how developers learn Java and bootstrap applications. Why? They ...

Master everything Java from objects and arrays to classes with a single online resource.

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 ...

Quick Facts: Bridges Java classes and .NET assemblies to allow one to call methods and use properties from the other. Pros: Offers a quick solution to the Java/.NET divide; uses shared memory, ...

A method might accept a specific type and its subclasses, but you want to restrict usage to a select few implementations of your own design. Java's open inheritance model can feel like an open ...

This is needed because it is common to write Java classes containing a main method that can be used for testing or small utilities. Thus, if you link a bunch of Java-compiled classes together, there ...