gradle dependencies { implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version" } import kotlin.collections.CollectionsKt; import java.util.Arrays; import java.util.List; public class Main { public static void main(String[] args) { List<Integer> numbers = Arrays.asList(1, 2, 3, 4, 5); List<Integer> doubledNumbers = CollectionsKt.map(numbers, num -> num * 2); } }