COJetBrains · on Coursera
Kotlin for Java Developers
Intermediate 40 hours English Course Certificate Certificate
About this course
This JetBrains-authored course teaches Kotlin to Java developers: Kotlin's type system, null safety, data classes, extension functions, lambdas, and the Kotlin standard library. Students convert Java code to idiomatic Kotlin throughout, learning how Kotlin's features reduce boilerplate while maintaining JVM compatibility.
The course covers Kotlin coroutines for asynchronous programming — the feature that most significantly differentiates Kotlin from Java for Android and backend development. Taught by Svetlana Isakova, one of Kotlin's core designers.
What you'll learn
Write idiomatic Kotlin using data classes, extension functions, and sealed classes
Apply Kotlin's null safety system to eliminate NullPointerExceptions
Use lambda expressions and functional programming patterns in Kotlin
Implement coroutines for structured concurrency and async programming
Interoperate between Kotlin and existing Java codebases
This course includes
40h
On-demand video
Yes
Certificate
Yes
Mobile access
English
Language
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Instructor
SI
Svetlana Isakova
Coursera instructor
180K+ learners3 courses4.8 instructor rating
Svetlana Isakova is a Kotlin Developer Advocate at JetBrains and co-author of Kotlin in Action — one of the principal educators of Kotlin's design philosophy.
Requirements
- Java programming experience required — this course assumes JVM knowledge
Who this course is for
- Java developers who want to learn Kotlin for Android or backend development
- JVM developers whose teams are migrating from Java to Kotlin
- Android developers who want to write modern Kotlin rather than Java
About this provider
CO
Coursera
University-backed online learning platform. 142M learners, 7,000+ courses from 325+ institutions.
Frequently asked questions
Yes — Google has made Kotlin the preferred language for Android since 2019, and all modern Android samples are Kotlin-first.
Yes — Kotlin integrates seamlessly with Spring Boot and Ktor for JVM backend services.