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

Java's default constructor lets developers create instances of classes when an explicitly defined constructor does not exist. Here's how it works.

To effectively use Unified Modeling Language when developing Java applications, developers must have a thorough understanding of the UML elements and how these elements map to Java.

Sealed classes in Java let developers limit the creation and use of subclasses and preserve the class hierarchy. Here is how sealed classes in Java work.