Java SE 11: Inheritance, Polymorphism, and Abstraction

Overview/Description
Expected Duration
Lesson Objectives
Course Number
Expertise Level

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Overview/Description
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's type, with the INSTANCEOF operator. Contrast Abstract and Non-Abstract Classes. Finally, extend an abstract class and form a class hierarchy.

Expected Duration (hours)
0.7

Lesson Objectives

Java SE 11: Inheritance, Polymorphism, and Abstraction

define inheritance in the context of a Java class hierarchy

create a subclass

override a method in the superclass

use the super keyword to reference the superclass

define polymorphism

cast a superclass reference to the subclass type

use the instanceof operator to test an object's type

explain the difference between abstract and non-abstract classes

create a class hierarchy by extending an abstract class

override a method in the superclass

Course Number:
it_sdjase_09_enus

Expertise Level
Beginner