To Lecture Notes

IT 372 -- May 4, 2026

Review Exercises

1. What is wrong with this Kotlin toString method?
   

   fun toString( ) : String {
       return "$v1; $v2: $v3"
   }
   

2. What must you do to make a Kotlin base class inheritable?
3. What is a recommended alternative to using secondary constructors in a class?
4. What is wrong with this Kotlin statement? How do you fix it?
   

   var s : String = null
   

Introduction to Kotlin

• Look at the Anonymous and Lambda Functions section.

Introduction to Jetpack Compose

Composable Parameters

• Lists some of important parameters for the composables that we will be using.