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Lesson 17 - Type casting and object hierarchy in Kotlin

In the previous lesson, Interfaces in Kotlin, we learned about interfaces and created a Pterodactyl class in Kotlin. In today's tutorial, we'll continue working on our interface project. We'll also go over type casting and reveal more secrets of the object-oriented programming.

Type casting

Let's go back to our previous project and change the code in the main() function to have our pterodactyl stored in a variable of the BirdInterface type:

val bird: BirdInterface = Pterodactyl()

We're allowed to do that because the Pterodactyl class implements


 

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Article description

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We'll learn how to cast an instance to another data type using interfaces in Kotlin. We'll create an object hierarchy.

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Article has been written for you by Samuel Kodytek
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