Kotlin For Java Developers

Packt Publishing

Kotlin for Java Developers: Confidently transition from Java to Kotlin through hands-on examples and idiomatic Kotlin practices (English Edition)

Independently published

Kotlin Essentials for Java Developers: Confidently migrate legacy applications through hands-on projects and modern practices (Programming books)

Apress

Kotlin Mastery: A Comprehensive Guide for Java Developers and New Programmers

Kotlin 4 Java Developers: Einstieg, Umstieg, Praxisbeispiele für die Kotlin Programmierung

978-83-966847-2-1

Kotlin Essentials (Kotlin for Developers, Band 1)

O'Reilly Media

Java to Kotlin: A Refactoring Guidebook (English Edition)

978-83-966847-4-5

Advanced Kotlin (Kotlin for Developers, Band 4)  

Manning Publications

Kotlin in Action, Second Edition                

978-83-966847-5-2

Effective Kotlin: Best Practices (Kotlin for Developers, Band 5)

Independently Published

Java Kotlin Android Mobile I'm a developer: Notebook 6x9, graph paper