说明：  本书从Kotlin的HelloWorld开始，生动讲解Kotlin的基础知识和实战案例，分为两大部分：“基础知识”部分包括语言基础、基本数据类型与类型变量、集合类、泛型、面向对象编程、函数式编程、协程等；“实战”部分包括Kotlin与Java互操作、使用Kotlin集成Spring Boot开发WEB服务端、使用Kotlin集成Gradle开发、使用Kotlin和Anko的Android开发、使用Kotlin DSL、Kotlin文件IO操作与多线程、使用Kotlin Native。
(Beginning with Hello World of Kotlin, this book vividly explains Kotlin's basic knowledge and practical cases, which are divided into two parts: "Basic knowledge" includes language basis, basic data types and type variables, set classes, generics, object-oriented programming, functional programming, and collaboration; and "Practical knowledge" includes Kotlin and Java. Interoperability, using Kotlin to integrate Spring Boot to develop WEB server, using Kotlin to integrate Gradle development, using Kotlin and Anko to develop Android, using Kotlin DSL, Kotlin file IO operation and multithreading, using Kotlin Native.)