Uses of Interface java.util.concurrent.Flow.Publisher (Java SE 12 & JDK 12 )

## Uses of Interface
java.util.concurrent.Flow.Publisher

- Packages that use Flow.Publisher
  Package | Description
  --- | ---
  java.net.http | HTTP Client and WebSocket APIs
  java.util.concurrent | Utility classes commonly useful in concurrent programming.

- - ### Uses of Flow.Publisher in java.net.http

    Subinterfaces of Flow.Publisher in java.net.http
    Modifier and Type | Interface | Description
    --- | --- | ---
    `static interface` | `HttpRequest.BodyPublisher` | A `BodyPublisher` converts high-level Java objects into a flow of byte buffers suitable for sending as a request body.

    Methods in java.net.http that return types with arguments of type Flow.Publisher
    Modifier and Type | Method | Description
    --- | --- | ---
    `static HttpResponse.BodyHandler<Flow.Publisher<List<ByteBuffer>>>` | HttpResponse.BodyHandlers.`ofPublisher()` | Returns a `BodyHandler<Publisher<List<ByteBuffer>>>` that creates a `BodySubscriber``<Publisher<List<ByteBuffer>>>` obtained from `BodySubscribers.ofPublisher()`.
    `static HttpResponse.BodySubscriber<Flow.Publisher<List<ByteBuffer>>>` | HttpResponse.BodySubscribers.`ofPublisher()` | Returns a response subscriber which publishes the response body through a `Publisher<List<ByteBuffer>>`.

    Methods in java.net.http with parameters of type Flow.Publisher
    Modifier and Type | Method | Description
    --- | --- | ---
    `static HttpRequest.BodyPublisher` | HttpRequest.BodyPublishers.`fromPublisher​(Flow.Publisher<? extends ByteBuffer> publisher)` | Returns a request body publisher whose body is retrieved from the given `Flow.Publisher`.
    `static HttpRequest.BodyPublisher` | HttpRequest.BodyPublishers.`fromPublisher​(Flow.Publisher<? extends ByteBuffer> publisher, long contentLength)` | Returns a request body publisher whose body is retrieved from the given `Flow.Publisher`.

  - ### Uses of Flow.Publisher in java.util.concurrent

    Subinterfaces of Flow.Publisher in java.util.concurrent
    Modifier and Type | Interface | Description
    --- | --- | ---
    `static interface` | `Flow.Processor<T,​R>` | A component that acts as both a Subscriber and Publisher.

    Classes in java.util.concurrent that implement Flow.Publisher
    Modifier and Type | Class | Description
    --- | --- | ---
    `class` | `SubmissionPublisher<T>` | A `Flow.Publisher` that asynchronously issues submitted (non-null) items to current subscribers until it is closed.