This post explains how to use classes in Java to build objects and organize your code. Also learn: constructors, static methods, and more!

Another interesting concept in this Java code challenge is that we are using an anonymous inner class. This basically means any class that will implement the methods from the Nemesis abstract class.

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.

A public method should never be called by another public method within the same class hierarchy. It should only be called by other classes via the classes' public interface. Class calls might not be ...