Akka Actors communicate example

In this example, we will discuss how Actors communicate with each other, which means how one Actor sends a message to second Actor, and how it receives and processes the messages from the second Actor:

Follow these steps to develop and test this akkacommunicate-app application:

1. Create an SBT Project in IDE. Here, I'll use helloworld-app as my SBT project name.
2. Add the akka-actor module configuration to the build.sbt file:

build.sbt:

      name := "akkacommunicate-app"
      version := "1.0" 
      scalaVersion := "2.12.2" 
      libraryDependencies ++= Seq("com.typesafe.akka" %% "akka-actor" %
       "2.5.9") 

3. Create greeting messages as Case classes and Case object(s), as shown:

GreetingMessages.scala:

      package com.packt.publishing.reactive.communicate 
      case class GoodMorning(name: String) 
      case object HowDoYouDo 
      case class GoodBye(name: String) 

4. Create PersonOneActor with its messages processing logic, as illustrated:

PersonOneActor.scala:

...