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Akka/Scala example source code file (HelloKernel.scala)

This example Akka source code file (HelloKernel.scala) is included in my "Source Code Warehouse" project. The intent of this project is to help you more easily find Akka and Scala source code examples by using tags.

All credit for the original source code belongs to; I'm just trying to make examples easier to find. (For my Scala work, see my Scala examples and tutorials.)

Akka tags/keywords

actor, actorsystem, akka, bootable, hello, helloactor, hellokernel, kernel, received, start, string, worldactor

The HelloKernel.scala Akka example source code

package sample.kernel.hello

import{ Actor, ActorSystem, Props }
import akka.kernel.Bootable

case object Start

class HelloActor extends Actor {
  val worldActor = context.actorOf(Props[WorldActor])

  def receive = {
    case Start => worldActor ! "Hello"
    case message: String =>
      println("Received message '%s'" format message)

class WorldActor extends Actor {
  def receive = {
    case message: String => sender() ! (message.toUpperCase + " world!")

class HelloKernel extends Bootable {
  val system = ActorSystem("hellokernel")

  def startup = {
    system.actorOf(Props[HelloActor]) ! Start

  def shutdown = {

Other Akka source code examples

Here is a short list of links related to this Akka HelloKernel.scala source code file:

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