Java SE 11: Inheritance Polymorphism & Abstraction

Examine the methods of polymorphism inheritance and abstraction in Java. During this course you will discuss inheritance in the context of a Java class hierarchy. See how to create a subclass. Override a method in the superclass. Use the SUPER keyword to reference the superclass. Discover Polymorphism. Cast a superclass reference to the subclass type. Test an object type with the INSTANCEOF operator. Contrast Abstract and Non-Abstract Classes. Finally extend an abstract class and form a class hierarchy.