Compare inheritance and composition, the two fundamental ways to relate Java classes, then practice debugging ClassCastExceptions in Java inheritance.

Animal still has one method, inheritance only works from the superclasses to the subclasses. Not everything can be inherited, and this depends directly from the used visibility modifiers. When a ...

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.

BankAccount.java is the Super Class for Savings Account. This program was created to develop OOP skills, in particular - Inheritance and Abstraction. BankAccount.java has a deposit, withdrawal, ...