Kotlin
Kotlin Foundations
A modern, concise language for the JVM and Android: null safety, data classes, extension functions, and idiomatic Java interop.
7 lessons
Start the first lessonCurriculum
- 1Hello, Kotlin📝 quiz
- 2Variables, Null Safety, and String Templates📝 quiz
- 3Control Flow: if, when, and Ranges📝 quiz
- 4Functions and Lambdas📝 quiz
- 5Classes, Data Classes, and Objects📝 quiz
- 6Collections and Extension Functions📝 quiz
- 7Final Project: Contact Book Console App
Every lesson is open, take them in order or jump straight to what you need.