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kotlinlang

how I can pass my kotlin code to someone's java project?

You could convert it to Java, or compile it as a library, or add support for Kotlin compilation to the java project

how to compile it as a library? or add compilation ?

add support for kotlin compilation -&gt; You add the kotlin dependencies

compile it as a library -&gt; You create a normal jar like you would do to distribute anything and pass it to them so they can add it as a dependency

you mean like this <https://kotlinlang.org/docs/tutorials/command-line.html#creating-and-running-a-first-application>

please give me a link, I google that and nothing is help

like pack kotlin code to a jar file and import that file in java?

You could use a build tool like maven
Create a jar from the Kotlin sources
And distribute it

yeah, I did that, pack kotlin into a jar, and it crashs in java to use that jar