Kotlin是由JetBrains创建的基于JVM的编程语言，IntelliJ正是JetBrains的杰作，而android Studio是
基于IntelliJ修改而来的。Kotlin是一门包含很多函数式编程思想的面向对象编程语言。
Later, I learned that Kotlin was originally named after an island (Котлин). It is a statically typed programming language that supports JVM platform, android platform, browser js runtime environment, local machine code, etc. Supports 100% full interoperability with Java , Android. Kotlin was born to make up for the features of modern languages that Java lacks, and to greatly simplify the code, allowing developers to write as little boilerplate code as possible...
CSDN blog address: http://blog.csdn.net/ls0609/article/details/75084994