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

However, an ideal solution would be to restrict the inheritance to a few specific classes. That's exactly where the sealed class comes into the picture. What is a sealed class? Sealed classes, ...

Well-written Java programs have the mechanical elegance of well-written object-oriented code. The functionality is the result of interacting components, like gears in a machine.