Akka provides APIs for Java and Scala. Both support the full range of Akka features to provide a great development experience building concurrent and distributed systems.
Lightbend Tech Hub generates a variety of zipped examples that you can build and run with Maven, Gradle or sbt. Start with the Hello World example project to get acquainted with Akka basics.
The above example is a great introduction to Akka Actors. You find more guides and samples at developer.lightbend.com.