title: Java 9 HttpClient still in incubation?
body: <p>Saw from Javadoc of <a href="https://docs.oracle.com/javase/9/docs/api/jdk/incubator/http/HttpClient.html" rel="nofollow noreferrer"><code>HttpClient</code></a> - </p>
  
  <blockquote>
    <p>Incubating Feature. Will be removed in a future release.</p>
  </blockquote>
  
  <p>And it doesn't seem to support <code>application/x-www-form-urlencoded</code> or <code>multipart/form-data</code> <strong>POST</strong>. See this post:</p>
  
  <p><a href="https://stackoverflow.com/questions/46392160/java-9-httpclient-send-a-multipart-form-data-request">Java 9 HttpClient send a multipart/form-data request</a></p>