Kotlin K2

Go to Intellij Preferences -> Build, Execution, Deployment -> Kotlin Compiler . Update Language version and Api version to the one you wish. This should be the accepted answer.

1.6.20-M1 / February 8, 2022. Typing discipline. Inferred, static, strong. Platform. Android.

Kotlin is supported by all major Java IDEs including IntelliJ IDEA, Android Studio, and Eclipse. In addition, a command line compiler is available and provides straightforward support for compiling and running applications.

Kotlin/JVM compiler options The Kotlin compiler for JVM compiles Kotlin source files into Java class files . The command-line tools for Kotlin to JVM compilation are kotlinc and kotlinc-jvm . You can also use them for executing Kotlin script files.