Exception in thread "main" java.lang.ClassCastException: class Superclass cannot be cast to class Subclass (Superclass and Subclass are in unnamed module of loader 'app') at BadDowncast.main ...

This is an example of Java inheritance with method overriding. First, we extend the Animal class to create a new Cat class. ... When instantiating a superclass with the subclass, ...

Sealed classes make Java an even more powerful and expressive language and set the stage for even more sophisticated techniques such as pattern matching, which we'll explore in a subsequent article. A ...