Top Answers

1. Can a Java interface be defined such that only Enums can extend it?
   6 votes
2. Why is KClass declared as KClass<T : Any> and not KClass<T> so that the type argument can be nullable
   5 votes
3. Strange behaviour of Kotlin compiler or Java decompiler
   3 votes
4. Is it possible to combine more than 2 CompletableFuture in Java 8/11?
   2 votes
5. Is it possible to join two Java 8 streams?
   2 votes