Akka actor life cycle hooks.

package net.javapedia.akka.example;

import akka.actor.AbstractActor;
import akka.actor.ActorRef;
import akka.actor.ActorSystem;
import akka.actor.Props;
import akka.event.Logging;
import akka.event.LoggingAdapter;

public class TestActor extends AbstractActor {
    private LoggingAdapter log = Logging.getLogger(getContext().getSystem(), this);

    @Override
    public Receive createReceive() {
        //Doesn't handle any message
        return receiveBuilder().build();
    }

    public static Props props() {
        Props props = Props.create(TestActor.class, TestActor::new);
        return  props;
    }

    @Override
    public void preStart() throws Exception {
        log.info("Application started...");
    }

    @Override
    public void postRestart(Throwable reason) throws Exception {
        log.info("Application restarted...");
    }

    @Override
    public void postStop() throws Exception {
        log.info("Application stopped.");
    }

    public static void main(String[] args) {
        ActorSystem actorSystem = ActorSystem.create("actorSystem");

        try {
            ActorRef actorRef = actorSystem.actorOf(TestActor.props(), "supervison");

        }
        finally {
            actorSystem.terminate();
        }
    }

}

 Task :TestActor.main()
[INFO] [09/16/2019 20:53:34.704] [actorSystem-akka.actor.default-dispatcher-2] [akka://actorSystem/user/supervison] Application started...
[INFO] [09/16/2019 20:53:34.707] [actorSystem-akka.actor.default-dispatcher-2] [akka://actorSystem/user/supervison] Application stopped.