package org.akka.essentials.java.future.example; import org.akka.essentials.java.future.example.messages.OrderHistory; import akka.actor.UntypedActor; public class OrderAggregateActor extends UntypedActor { @Override public void onReceive(Object message) throws Exception { if (message instanceof OrderHistory) { OrderHistory orderHistory = (OrderHistory) message; System.out.println("Order History -> " + orderHistory.getOrder() + "\n" + orderHistory.getAddress()); } } }