Akka/Scala example source code file (LookupApplication.java)

This example Akka source code file (LookupApplication.java) 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 akka.io; I'm just trying to make examples easier to find. (For my Scala work, see my Scala examples and tutorials.)

Akka tags/keywords

actor, actorref, actorsystem, akka, calculatorsystem, concurrent, duration, lookup, lookupapplication, override, random, remote, runnable, seconds, string, time

The LookupApplication.java Akka example source code

package sample.remote.calculator;

import static java.util.concurrent.TimeUnit.SECONDS;
import java.util.Random;
import scala.concurrent.duration.Duration;
import akka.actor.ActorRef;
import akka.actor.ActorSystem;
import akka.actor.Props;
import com.typesafe.config.ConfigFactory;

public class LookupApplication {
  public static void main(String[] args) {
    if (args.length == 0 || args[0].equals("Calculator"))
      startRemoteCalculatorSystem();
    if (args.length == 0 || args[0].equals("Lookup"))
      startRemoteLookupSystem();
  }

  public static void startRemoteCalculatorSystem() {
    final ActorSystem system = ActorSystem.create("CalculatorSystem",
        ConfigFactory.load(("calculator")));
    system.actorOf(Props.create(CalculatorActor.class), "calculator");
    System.out.println("Started CalculatorSystem");
  }

  public static void startRemoteLookupSystem() {

    final ActorSystem system = ActorSystem.create("LookupSystem",
        ConfigFactory.load("remotelookup"));
    final String path = "akka.tcp://CalculatorSystem@127.0.0.1:2552/user/calculator";
    final ActorRef actor = system.actorOf(
        Props.create(LookupActor.class, path), "lookupActor");

    System.out.println("Started LookupSystem");
    final Random r = new Random();
    system.scheduler().schedule(Duration.create(1, SECONDS),
        Duration.create(1, SECONDS), new Runnable() {
          @Override
          public void run() {
            if (r.nextInt(100) % 2 == 0) {
              actor.tell(new Op.Add(r.nextInt(100), r.nextInt(100)), null);
            } else {
              actor.tell(new Op.Subtract(r.nextInt(100), r.nextInt(100)), null);
            }

          }
        }, system.dispatcher());

  }
}