Java SE 11: Inheritance, Polymorphism, & Abstraction

Java SE 11    |    Beginner
  • 10 videos | 41m 22s
  • Includes Assessment
  • Earns a Badge
Likes 173 Likes 173
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

  • 4m 20s
    In this video, you will learn how to define inheritance in the context of a Java class hierarchy. FREE ACCESS
  • 5m 31s
    In this video, you will create a subclass. FREE ACCESS
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    3.  Overriding Methods in the Superclass
    4m 13s
    In this video, you will learn how to override a method in the superclass. FREE ACCESS
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    4.  Using the super Keyword
    5m 5s
    In this video, find out how to use the super keyword to reference the superclass. FREE ACCESS
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    5.  Polymorphism
    4m 31s
    Learn about how you define polymorphism. FREE ACCESS
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    6.  Casting Superclass References
    4m 21s
    In this video, find out how to cast a superclass reference to a subclass type. FREE ACCESS
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    7.  Using the instanceof Operator
    3m 17s
    Learn how to use the instanceof operator to test an object's type. FREE ACCESS
  • Locked
    8.  Contrasting Abstract and Non-Abstract Classes
    3m 24s
    After completing this video, you will be able to explain the difference between abstract and non-abstract classes. FREE ACCESS
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    9.  Extending an Abstract Class
    4m 8s
    In this video, you will learn how to create a class hierarchy by extending an abstract class. FREE ACCESS
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    10.  Exercise: Overriding Methods
    2m 33s
    In this video, you will override a method in the superclass. FREE ACCESS

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