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.

Polymorphism —or an object’s ability to execute specialized actions based on its type—is what makes Java code flexible. Many design patterns created by the Gang Of Four rely on some form of ...

Traverse the class's inheritance hierarchy. 10 types of Java constructors There is a variety of different types of constructors in Java, and each constructor type has its own special use case and is ...

The more familiar you are with Object and its methods, the more you can do with your Java programs.