noBody(): HttpRequest request = HttpRequest.newBuilder() In case we don't need a body, we can simply pass in an HttpRequest.BodyPublishers. FileProcessor – reads body from a file at the given path, created with.ByteArrayProcessor – reads body from a byte array, created with.InputStreamProcessor – reads body from an InputStream, created with.StringProcessor – reads body from a String, created with.The new API provides a number of BodyPublisher implementations out-of-the-box that simplify passing the request body: Problems With the Pre-Java 11 HTTP Client The core classes and interface providing the core functionality include: The new APIs provide native support for HTTP 1.1/2 WebSocket.The new HTTP client API provides a standard way to perform HTTP network operations with support for modern Web features such as HTTP/2, without the need to add third-party dependencies.Asynchronous calls are implemented using CompletableFuture.The CompletableFuture implementation takes care of applying each stage once the previous one has finished, so this whole flow is asynchronous. As of Java 11, the API is now fully asynchronous (the previous HTTP/1.1 implementation was blocking).This is achieved by introducing a number of changes such as stream multiplexing, header compression and push promises. The newer version of the HTTP protocol is designed to improve the overall performance of sending requests by a client and receiving responses from the server.The incubated HTTP API from Java 9 is now officially incorporated into the Java SE API.
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