Which standard library to use in Kotlin

Question

In Kotlin, when working with the JVM, it seems there is multiple choices for standard library, namely kotlin-stdlib, kotlin-stdlib-jdk7 and kotli

Answer 1

By running Gradle dependencies task in your Kotlin project, you can find some useful information. This is a part of output in a sample project:

$ ./gradlew dependencies

...

kotlinCompilerClasspath
\--- org.jetbrains.kotlin:kotlin-compiler-embeddable:1.3.20
     +--- org.jetbrains.kotlin:kotlin-stdlib:1.3.20
     |    +--- org.jetbrains.kotlin:kotlin-stdlib-common:1.3.20
     |    \--- org.jetbrains:annotations:13.0
     +--- org.jetbrains.kotlin:kotlin-script-runtime:1.3.20
     +--- org.jetbrains.kotlin:kotlin-reflect:1.3.20
     |    \--- org.jetbrains.kotlin:kotlin-stdlib:1.3.20 (*)
     \--- org.jetbrains.intellij.deps:trove4j:1.0.20181211

...