The HttpRequest and HttpResponse types provide a number of convenience factory methods for creating request publishers and response subscribers for handling common body types such as files, Strings, and bytes.

What is HttpRequest and HttpResponse?

HttpRequest is a system entity that represents a request to a server. HttpResponse represents the response from the server. Use these entities when publishing or consuming REST services.

What is HttpClient builder?

Enclosing class: HttpClient public static interface HttpClient.Builder. A builder of HTTP Clients. Builders are created by invoking newBuilder . Each of the setter methods modifies the state of the builder and returns the same instance.