scala actor example

actorexample.scala

import scala.actors.Actor
import scala.actors.Actor._

object Main {
	class Pong extends Actor {
		def act() {
			var pongCount = 0
			while (true) {
				receive {
					case "Ping" =>
						if (pongCount % 1000 == 0)
							Console.println("Pong: ping "+pongCount)
						sender ! "Pong"
						pongCount = pongCount + 1
					case "Stop" =>
						Console.println("Pong: stop")
						exit()
				}
			}
		}
	}

	class Ping(count: Int, pong: Actor) extends Actor {
		def act() {
			var pingsLeft = count - 1
			pong ! "Ping"
			while (true) {
				receive {
					case "Pong" =>
						if (pingsLeft % 1000 == 0)
							Console.println("Ping: pong")
						if (pingsLeft > 0) {
							pong ! "Ping"
							pingsLeft -= 1
						} else {
							Console.println("Ping: stop")
							pong ! "Stop"
							exit()
						}
				}
			}
		}
	}

	def main(args: Array[String]): Unit = {
		val pong = new Pong
		val ping = new Ping(100000, pong)
		ping.start
		pong.start
		println("???")
	}
	
}