I wanted to use Job so I can kick them off on the start of application. Now it seems like it has been removed from Play completely?

I saw some samples where people create a Global class, but not entirely sure if/how I should use that to replace Job.

Any suggestions?

Edit: If you gonna downvote, give a reason. Maybe I'm missing something in the question, maybe this doesn't belong here. At least something...

The Job class was removed in Play 2.0.

You have some alternatives though depending on your Play version and if you need asynchrony or not:

Akka Actors

For all version since Play 2.0 you can use Akka Actors to schedule an asynchronous task/actor once and execute it on startup via Play Global class.

public class Global extends GlobalSettings {

    @Override
    public void onStart(Application app) {
           Akka.system().scheduler().scheduleOnce(
               Duration.create(10, TimeUnit.MILLISECONDS),
               new Runnable() {
                    public void run() {
                        // Do startup stuff here
                        initializationTask();
                    }
               },
               Akka.system().dispatcher()
           );
      }  
 }

See https://www.playframework.com/documentation/2.3.x/JavaAkka for details.

Eager Singletons

Starting with Play 2.4 you can eagerly bind singletons with Guice

import com.google.inject.AbstractModule;
import com.google.inject.name.Names;

public class StartupConfigurationModule extends AbstractModule {
    protected void configure() {

        bind(StartupConfiguration.class)
            .to(StartupConfigurationImpl.class)
            .asEagerSingleton();
    }
}

The StartupConfigurationImpl would have it's work done in the default constructor.

@Singleton
public class StartupConfigurationImpl implements StartupConfiguration {
    @Inject
    private Logger log;

    public StartupConfigurationImpl() {
        init();
    }

    public void init(){
        log.info("init");
    }
}

See https://www.playframework.com/documentation/2.4.x/JavaDependencyInjection#Eager-bindings