Atomic Kotlin
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Atomic Kotlin

About the Book

Learn the Successor to Java Today!

  • No programming background necessary.
  • Summaries for experienced programmers.
  • Easy steps via very small chapters ("atoms").
  • Free accompanying exercises/solutions within IntelliJ Idea.
  • Gives you a strong Kotlin foundation.
  • Kotlin is cleaner, more consistent and far more powerful than Java.
  • Increase programming productivity with Kotlin's clear, concise syntax.
  • Produce safer, more reliable programs.
  • Kotlin easily interacts with Java.
  • Effortlessly migrate by adding pieces of Kotlin to an existing Java project.
  • Support for Windows, Mac and Linux.
  • Free version of Intellij IDEA includes extensive Kotlin support.
  • Book resources, live seminars, workshops and consulting available at

About the Authors

Bruce Eckel
Bruce Eckel

Bruce Eckel is the author of the multi-award-winning Thinking in Java and Thinking in C++, and a number of other books on computer programming including Atomic Scala. He's given hundreds of presentations throughout the world and puts on alternative conferences and events like the and developer retreats. He lives in Crested Butte, Colorado. Bruce has a BS in applied physics and an MS in computer engineering. His blog is at and his consulting, training and conference business is

Bruce Eckel

Episode 192

Svetlana Isakova
Svetlana Isakova

Svetlana began as a member of the Kotlin compiler team, and is now a developer advocate for JetBrains. She teaches Kotlin and speaks at conferences worldwide, and is coauthor of the book "Kotlin in Action".

Table of Contents

    • Copyright
  • Section I: Programming Basics
    • Introduction
    • Why Kotlin?
    • Hello, World!
    • var & val
    • Data Types
    • Functions
    • if Expressions
    • String Templates
    • Number Types
    • Booleans
    • Repetition with while
    • Looping & Ranges
    • The in Keyword
    • Expressions & Statements
    • Summary 1
  • Section II: Introduction to Objects
    • Objects Everywhere
    • Creating Classes
    • Properties
    • Constructors
    • Constraining Visibility
    • Packages
    • Testing
    • Exceptions
    • Lists
    • Variable Argument Lists
    • Sets
    • Maps
    • Property Accessors
    • Summary 2
  • Section III: Usability
    • Extension Functions
    • Named & Default Arguments
    • Overloading
    • when Expressions
    • Enumerations
    • Data Classes
    • Destructuring Declarations
    • Nullable Types
    • Safe Calls & the Elvis Operator
    • Non-Null Assertions
    • Extensions for Nullable Types
    • Introduction to Generics
    • Extension Properties
    • break & continue
  • Section IV: Functional Programming
    • Lambdas
    • The Importance of Lambdas
    • Operations on Collections
    • Member References
    • Higher-Order Functions
    • Manipulating Lists
    • Building Maps
    • Sequences
    • Local Functions
    • Folding Lists
    • Recursion
  • Section V: Object-Oriented Programming
    • Interfaces
    • Complex Constructors
    • Secondary Constructors
    • Inheritance
    • Base Class Initialization
    • Abstract Classes
    • Upcasting
    • Polymorphism
    • Composition
    • Inheritance & Extensions
    • Class Delegation
    • Downcasting
    • Sealed Classes
    • Type Checking
    • Nested Classes
    • Objects
    • Inner Classes
    • Companion Objects
  • Section VI: Preventing Failure
    • Exception Handling
    • Check Instructions
    • The Nothing Type
    • Resource Cleanup
    • Logging
    • Unit Testing
  • Section VII: Power Tools
    • Extension Lambdas
    • Scope Functions
    • Creating Generics
    • Operator Overloading
    • Using Operators
    • Property Delegation
    • Property Delegation Tools
    • Lazy Initialization
    • Late Initialization
  • Appendices
    • Appendix A: AtomicTest
    • Appendix B: Java Interoperability

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