Kotlin
JVM language from JetBrains — concise, null-safe, and the preferred language for Android development.
static
jit
since 2011
oopfunctionalconcurrent
Kotlin is fully interoperable with Java but eliminates much of its boilerplate — data classes, extension functions, null safety, and coroutines are all first-class. Google made it the preferred language for Android in 2019. Kotlin Multiplatform now allows sharing business logic across Android, iOS, and the web from a single codebase.