import com.googlecode.objectify.annotation.Entity;
import com.googlecode.objectify.annotation.Id;
import com.googlecode.objectify.annotation.Index;
@Entity
public class Car {
    @Id Long id;
    @Index String license;
    int color;
}

import com.googlecode.objectify.annotation.AlsoLoad;
import com.googlecode.objectify.annotation.Cache;
import com.googlecode.objectify.annotation.Entity;
import com.googlecode.objectify.annotation.Id;
import com.googlecode.objectify.annotation.IgnoreSave;
import com.googlecode.objectify.annotation.Load;
import com.googlecode.objectify.annotation.OnLoad;
@Entity
@Cache
public class Motorcycle {
    @Id String vin;
    @Load List<Ref<Person>> owners = new ArrayList<Ref<Person>>();
    @AlsoLoad("colour") int color;
    @IgnoreSave boolean ktm;
    @OnLoad public void onLoad() {
        if (ktm)
            color = ORANGE;
    }
}

import static com.googlecode.objectify.ObjectifyService.ofy;
Car porsche = new Car("2FAST", RED);
ofy().save().entity(porsche).now();    // async without the now()
assert porsche.id != null;    // id was autogenerated
// Get it back
Result<Car> result = ofy().load().key(Key.create(Car.class, porsche.id));  // Result is async
Car fetched1 = result.now();    // Materialize the async value
// More likely this is what you will type
Car fetched2 = ofy().load().type(Car.class).id(porsche.id).now();
// Or you can issue a query
Car fetched3 = ofy().load().type(Car.class).filter("license", "2FAST").first().now();
// Change some data and write it
porsche.color = BLUE;
ofy().save().entity(porsche).now();    // async without the now()
// Delete it
ofy().delete().entity(porsche).now();    // async without the now()