为什么 AKKA TypedActor class 有两个签名相同的方法？

Question

In using TypedActor.get(system) intellij spell an error 'ambiguous method call', here system is of type ActorSystem . I found in the decompiled source code of the TypedActor class file there are two methods with the same signature:

To my knowledge it is impossible for two methods to have the same signature in Java, so what is wrong here? What is the proper way to call the TypedActor.get(ActorSystem system) method?

The version of AKKA I'm using is 2.5.11 and the jar file akka-actor_2.13.0-M3.

Answer 1

This was a bug caused by an issue in the Scala compiler ( https://github.com/akka/akka/issues/25449 ) it has since been fixed so upgrading to a more recent Akka version should fix it.

Answer 2

EDIT: According to @johanandren below , this was a bug and it has now been fixed.

You can use TypedActor$.MODULE$.get(system) . This happens because of the way Scala objects get turned into singleton classes.

A Scala object TypedActor actually gets turned into the class TypedActor$ with a singleton instance called MODULE$ . This is because JVM bytecode doesn't actually support Scala's singleton objects, so lots of Scala names are wrangled and are hard to access from Java.