content: /*
   * Copyright (C) 2015-2025 Lightbend Inc. <https://www.lightbend.com>
   */
  
  package jdocs.stream;
  
  import java.util.stream.Stream;
  
  import akka.NotUsed;
  import akka.japi.Pair;
  import akka.stream.javadsl.*;
  // #asPublisher-import
  import static akka.stream.javadsl.AsPublisher.*;
  // #asPublisher-import
  
  public class MigrationsJava {
  
    public static void main(String[] args) {
      // #expand-continually
      Flow.of(Integer.class).expand(in -> Stream.iterate(in, i -> i).iterator());
      // #expand-continually
      // #expand-state
      Flow.of(Integer.class)
          .expand(
              in ->
                  Stream.iterate(new Pair<>(in, 0), p -> new Pair<>(in, p.second() + 1)).iterator());
      // #expand-state
  
      // #asPublisher
      Sink.asPublisher(WITH_FANOUT); // instead of Sink.asPublisher(true)
      Sink.asPublisher(WITHOUT_FANOUT); // instead of Sink.asPublisher(false)
      // #asPublisher
  
      // #async
      Flow<Integer, Integer, NotUsed> flow = Flow.of(Integer.class).map(n -> n + 1);
      Source.range(1, 10).via(flow.async());
      // #async
    }
  }
  