In 2012, Viktor Klang published a tiny Java snippet that implemented a tiny actor system in about about 20 lines of code; a few years later, a revised version showed how to do the same in Scala. I think untyped actors in the style of Akka Classic have always felt clunky in Java; Java used to lack a way to express pattern matching concisely. However, a few days ago I realized that Java 17 provides enough syntactic sugar to write shorter actors:
