JAVA

java to kotlin

IntelliJ

Convert Java To Kotlin

Go to the android studio's navigation bar
go to code (close to file)
then scroll down to convert java to kotlin
Note that your code must be totally correct first: syntax errors mean you won't be able to convert

java to kotlin tutorial

val name: String? = null

var lastName: String?
lastName = null

var firstName: String
firstName = null // Compilation error!!