http://ja.stackoverflow.com/questions/30305/playframework2-5-javaakka%E3%81%AEscheduler%E3%81%8C%E5%88%A9%E7%94%A8%E3%81%A7%E3%81%8D%E3%81%AA%E3%81%84

app\Module.java

import com.google.inject.AbstractModule;
import java.time.Clock;

import services.ApplicationTimer;
import services.AtomicCounter;
import services.Counter;
import services.MyApplicationGlobal;

/**
 * This class is a Guice module that tells Guice how to bind several
 * different types. This Guice module is created when the Play
 * application starts.
 *
 * Play will automatically use any class called `Module` that is in
 * the root package. You can create modules in other locations by
 * adding `play.modules.enabled` settings to the `application.conf`
 * configuration file.
 */
public class Module extends AbstractModule {

    @Override
    public void configure() {
        // Use the system clock as the default implementation of Clock
        bind(Clock.class).toInstance(Clock.systemDefaultZone());
        // Ask Guice to create an instance of ApplicationTimer when the
        // application starts.
        bind(ApplicationTimer.class).asEagerSingleton();
        // Set AtomicCounter as the implementation for Counter.
        bind(Counter.class).to(AtomicCounter.class);

        bind(MyApplicationGlobal.class).asEagerSingleton();
    }

}

app\services\MyApplicationGlobal.java

package services;

import java.util.concurrent.CompletableFuture;
import java.util.concurrent.TimeUnit;

import javax.inject.Inject;
import javax.inject.Singleton;

import akka.actor.ActorRef;
import akka.actor.ActorSystem;
import akka.actor.UntypedActor;
import play.Logger;
import play.inject.ApplicationLifecycle;
import scala.concurrent.duration.Duration;

@Singleton
public class MyApplicationGlobal {

    @Inject
    public MyApplicationGlobal(final ActorSystem system, ApplicationLifecycle lifecycle) {

        // サーバ起動時の動作
        Logger.info("----------------------------------- Start application... ------------------------------");

        ActorRef actor = system.actorOf(
            akka.actor.Props.create(HelloActor.class, "world")
        );

        system.scheduler().schedule(
            Duration.create(0, TimeUnit.MILLISECONDS), //Initial delay 0 milliseconds
            Duration.create(30, TimeUnit.MINUTES),     //Frequency 30 minutes
            actor,
            "tick",
            system.dispatcher(),
            null
        );

        lifecycle.addStopHook(() -> {
            Logger.info("----------------------------------- Stop application... ------------------------------");
            return CompletableFuture.completedFuture(null);
        });
    }
}

class HelloActor extends UntypedActor {
    private final String name;

    public HelloActor(String name) {
        this.name = name;
    }

    @Override
    public void onReceive(Object arg) throws Exception {
        System.out.println(java.text.MessageFormat.format("Hello, {0}!", name));
    }
}

build.sbt

name := """play-java"""

version := "1.0-SNAPSHOT"

lazy val root = (project in file(".")).enablePlugins(PlayJava)

scalaVersion := "2.11.8"

libraryDependencies += javaJdbc
libraryDependencies += cache
libraryDependencies += javaWs

project\build.properties

#Activator-generated Properties
#Tue Oct 04 16:51:22 CDT 2016
template.uuid=26c759a5-daf0-4e02-bcfa-ac69725267c0
sbt.version=0.13.13

project\plugins.sbt

// The Play plugin
addSbtPlugin("com.typesafe.play" % "sbt-plugin" % "2.5.9")

// Web plugins
addSbtPlugin("com.typesafe.sbt" % "sbt-coffeescript" % "1.0.0")
addSbtPlugin("com.typesafe.sbt" % "sbt-less" % "1.1.0")
addSbtPlugin("com.typesafe.sbt" % "sbt-jshint" % "1.0.4")
addSbtPlugin("com.typesafe.sbt" % "sbt-rjs" % "1.0.8")
addSbtPlugin("com.typesafe.sbt" % "sbt-digest" % "1.1.1")
addSbtPlugin("com.typesafe.sbt" % "sbt-mocha" % "1.1.0")
addSbtPlugin("org.irundaia.sbt" % "sbt-sassify" % "1.4.6")

// Play enhancer - this automatically generates getters/setters for public fields
// and rewrites accessors of these fields to use the getters/setters. Remove this
// plugin if you prefer not to have this feature, or disable on a per project
// basis using disablePlugins(PlayEnhancer) in your build.sbt
addSbtPlugin("com.typesafe.sbt" % "sbt-play-enhancer" % "1.1.0")