Kotlin brings compile time null checks, functional aspects and expressive syntax to the JVM platform Kotlin is interoperable with Java and can be introduced incrementally to an existing Java project ...

JetBrains has released Kotlin 1.6.20, a new release of the Kotlin language that features better interoperability with generic Java classes as well as faster build times.

Kotlin has quickly gained popularity for its concise syntax, expressive language features, and seamless interoperability with Java.