Basic intro to oop with IntelliJ

This is a live coding workshop. To pull it off you need a computer with intelliJ installed. Ideally you should have already started a gradle project before the workshop begins because it takes a little bit of time.

The following class hierarchy is useful for explaining this stuff:

  • base class Car
    • constructor takes a colour
    • position starts at 0
    • drive function increments position
  • Bakkie inherits from Car
  • RaceCar inherits from Car
    • these are faster thn bakkies
    • default colour

Cover the following topics:

  • Java requires all executable code to be wtrapped in a class
  • Difference between classes and objects
  • How to instantite different objects, make 2 cars with different colours, chow that their attributes are independent
  • Inheritance and overrides

Also be sure to cover clean coding best practices, there is a lot of kak on the internet

  • Flat is better than nested
  • readability counts
  • reusability counts
  • dont put your main method inside a class that you intend to instantiate
  • dont put Bakkie inside the Car or RaceCar class. It gets its own file
  • use sensible names. names matter
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