To get started with Kotlin, download the Android Studio 3.0 preview, open one of your existing Java files, and then choose “Convert Java File to Kotlin File” in the Code menu.

Since then, Google took this a step further by making Kotlin its preferred language for writing Android apps in 2019 — and while plenty of developers still use Java, Kotlin is quickly becoming ...

The Spring team, meanwhile, has supported Kotlin features such as coroutines, Kotlin extensions, and configuration DSLs. So far, 27% of Spring developers have used Kotlin, JetBrains said.

Kotlin is a super new programming language built by JetBrains, which also coincidentally develops the JetBrains IDE that Android Studio — Google’s official developer tool — is based on.

It was only two years ago, at I/O 2017, that Google announced support for Kotlin in its Android Studio IDE. That came as a bit of a surprise, given that Java had long been the preferred language ...