Kotlin for Enterprise Applications using Java EE

coverpage

Title Page

Foreword

Contributors

About the author

About the reviewers

Acknowledgements

About Packt

Why subscribe?

Packt.com

Preface

Who this book is for

What this book covers

To get the most out of this book

Download the example code files

Conventions used in the book

Get in touch

Reviews

Kotlin – A First look

Technical requirements

Introduction to Kotlin

The history of Kotlin

Features of Kotlin

Getting started with Kotlin

Installing Kotlin

Installing Kotlin on Linux

Installing Kotlin on Windows

Installing Kotlin on Mac

Compiling and running

A quick tour of Kotlin

Declaring variables

Data types in Kotlin

Warnings

Type inference

String templates

Multi-line String Literals

Expressions over statements

Functions

Default arguments

Named arguments

varargs and spread

The for loop

Iterating over a list

When clause

The nullable type

Lambda expressions in Kotlin

Extension functions

Classes in Kotlin

Constructors

Static functions

Kotlin programming style and Syntax

Summary

Kotlin – The Game Changer

Technical requirements

Why Kotlin is the game changer

Interoperability with Java

Functional paradigms

Immutability

Null safety

Kotlin versus Java

Null safety issue

Arrays in Kotlin are invariant

Extension functions

No checked exceptions

Functional paradigms

Concise code

Configuring Kotlin in the project

Creating a simple Kotlin project

Maven project

Configuring Kotlin in Eclipse

Working with coroutines

Coroutines in Kotlin

Using Kotlin with Java

Kotlin in an existing Java project

Java in a Kotlin project

Summary

An Overview of Java EE and Kotlin

Technical requirements

Overview of Java EE

New features and enhancements in Java EE 8

Introduction to the Java EE architecture

Integrating Kotlin plugins

The all-open compiler plugin

Using the all-open plugin in Maven

Using the all-open plugin in Gradle

No-arg compiler plugin

Using the no-org plugin in Maven

Using the no-org plugin in Gradle

The kotlin-spring compiler plugin

Using the kotlin-spring plugin in Maven

Using the kotlin-spring plugin in Gradle

Using the kotlin-spring plugin in CLI

JPA plugin

Using the kotlin-jpa plugin in Maven

Using the kotlin-jpa plugin in Gradle

Using the kotlin-jpa plugin in CLI

The SAM-with-receiver compiler plugin

Using the SAM-with-receiver plugin in Maven

Using the SAM-with-receiver plugin in Gradle

Using the SAM-with-receiver plugin in CLI