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Kotlin

Tool

Kotlin

A modern, concise language for Android and the JVM

Learn Kotlin syntax, null safety, and classes.

8

Chapters

17

Hours (estimated)

1

Self-paced

Part-time

About 6 weeks

1 hour a day, 3 days a week

Full-time

About 2 weeks

3 hours a day, 3 days a week

Estimated from 8 chapters (notes, practice, labs, quiz, exercise, and challenge) plus the final exam. Go at your own pace.

Curriculum

8 chapters, each with a tutorial, a live example, a quiz, an exercise, a challenge, and class practice.

  1. 1

    Introduction to Kotlin

    Conciseness, null safety, and running on the JVM.

  2. 2

    Variables & Types

    val vs var, and type inference.

  3. 3

    Control Flow

    if as an expression, when, and loops.

  4. 4

    Functions

    Default arguments and single-expression functions.

  5. 5

    Classes & Objects

    Data classes and primary constructors.

  6. 6

    Null Safety

    Safe calls, the Elvis operator, and !!

  7. 7

    Collections

    List, Map, and functional-style operations.

  8. 8

    Coroutines Basics

    Lightweight concurrency in Kotlin.

Start learning — it's free →

Kotlin is free to study, self-paced. Pass the final exam to earn an optional Certificate of Completion for $40.