<dependency> <groupId>com.twitter</groupId> <artifactId>finagle-core_2.12</artifactId> <version>21.4.0</version> </dependency> import com.twitter.finagle.Http; import com.twitter.finagle.ListeningServer; import com.twitter.finagle.Service; import com.twitter.finagle.http.Request; import com.twitter.finagle.http.Response; import com.twitter.finagle.http.Status; import com.twitter.util.Await; import com.twitter.util.Future; public class SimpleHttpServer { public static void main(String[] args) { Service<Request, Response> service = new Service<Request, Response>() { public Future<Response> apply(Request request) { return Future.value(Response.apply() .status(Status.Ok()) .setContentString("Hello, World!")); } }; ListeningServer server = Http.server() .serve(":8080", service); Await.ready(server); } }