Outline:

1. Questions?
2. Quiz #1
3. Kotlin constructors, revisited
   • primary constructors and init block
   • default parameter values
4. Inheritance
   • parent and child classes (a.k.a. superclasses and subclasses)
   • is-a versus has-a
   • example: inheritance and method calls
5. Wrap-up

What’s next

Upcoming assignments:

• Assignment 1 is due this Wednesday
• Assignment 2 will be released by Wednesday, and based primarily on Friday’s class

What you should do now:

• The readings (see below)
• Try out Exercise 2 from today
• Complete Parts B-D of Assignment 1

Reading assignment (to be completed by the next class):

Classes and inheritance (from today):

• Another take on classes
• Another take on constructors
• Inheritance

Inheritance and interfaces (for next time):

• Another take on inheritance
• Interfaces