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.

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

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 ...

It’s inappropriate to use an assertion to validate an argument in this public method. An assertion is intended to detect errors in programming logic and not to safeguard a method from erroneous ...

This method makes it possible to sort an array of unsorted constants. getDeclaringClass() returns the java.lang.Class object corresponding to the current constant’s enum.