"the IDEs is not as good as the java counterparts yet" How do you mean? What IDEs are you referring to? Kotlin is fully (and very well) supported in IntelliJ I

"the IDEs is not as good as the java counterparts yet" How do you mean? What IDEs are you referring to? Kotlin is fully (and very well) supported in IntelliJ Idea - unsurprisingly so, given that it's JetBrains own invention...