Java SE 11: Inheritance, Polymorphism, & Abstraction

Java SE 11    |    Beginner
  • 10 Videos | 41m 22s
  • Includes Assessment
  • Earns a Badge
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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.

WHAT YOU WILL LEARN

  • 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

IN THIS COURSE

  • Playable
    1. 
    Java Class Hierarchy and Inheritance
    4m 20s
    UP NEXT
  • Playable
    2. 
    Creating Subclasses
    5m 31s
  • Locked
    3. 
    Overriding Methods in the Superclass
    4m 13s
  • Locked
    4. 
    Using the super Keyword
    5m 5s
  • Locked
    5. 
    Polymorphism
    4m 31s
  • Locked
    6. 
    Casting Superclass References
    4m 21s
  • Locked
    7. 
    Using the instanceof Operator
    3m 17s
  • Locked
    8. 
    Contrasting Abstract and Non-Abstract Classes
    3m 24s
  • Locked
    9. 
    Extending an Abstract Class
    4m 8s
  • Locked
    10. 
    Exercise: Overriding Methods
    2m 33s

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