Java Coding Problems

Creating a body from InputStream

Creating a body from InputStream can be accomplished using BodyPublishers.ofInputStream(), as shown in the following snippet of code (here, we rely on ByteArrayInputStream but, of course, any other InputStream is suitable):

HttpRequest requestBodyOfInputStream = HttpRequest.newBuilder()  .header("Content-Type", "application/json")  .POST(HttpRequest.BodyPublishers.ofInputStream(()    -> inputStream("user.json")))  .uri(URI.create("https://reqres.in/api/users"))  .build();private static ByteArrayInputStream inputStream(String fileName) {  try (ByteArrayInputStream inputStream = new ByteArrayInputStream(    Files.readAllBytes(Path.of(fileName)))) {    return inputStream;  } catch (IOException ex) { throw new RuntimeException("File ...