7.4. More on Polymorphism¶

7.4.1. Objectives¶

Review Java Interfaces and Abstract Classes
Review Inheritance and Composition
Review Overloading and Overriding
Review Reference Variables
Apply Typecasting

7.4.2. Interactive: Polymorphism Measurable Interface [7:23]¶

7.4.2.1. Polymorphism Example Code¶

Try It Yourself

In Eclipse, use the Project > Download Assignment… menu command to download the exercise project named “ex07.04-MeasurableInterface”. Use this example to follow along with the following video. Feel free to experiment.

Refer to 01.02: Lab: LightBot for Beginners if you need to review the instructions for downloading Eclipse projects.

Video Slides 7.4.2.1-JavaOOPPolyMeasurable.pdf

7.4.3. Checkpoint 1¶

7.4.4. Programming Practice: Polymorphism 1¶

7.4.5. Interactive: Polymorphism Computer Superclass [12:09]¶

Follow Along and Engage

Download the slides corresponding to the video. Take notes on them as you watch the video, practice drawing diagrams yourself!

Video Slides 7.4.5-JavaOOPPolyComputer.pdf

7.4.6. Checkpoint 2¶

7.4.7. Interactive: Polymorphism Integer Example [7:40]¶