Monthly Archives: January 2017

Java 9: Why Is There A New HTTP Client?

Regarding JEP 110: HTTP/2 Client one might reasonably ask the question: “Why is Java 9 introducing a new HTTP client when there are so many high-quality and time-tested libraries out there?”

There are several answers:

  1. The first is provided by the the JEP itself: “A number of existing HTTP client APIs and implementations exist, e.g., Jetty and the Apache HttpClient. Both of these are both rather heavy-weight in terms of the numbers of packages and classes, and they don’t take advantage of newer language features such as lambda expressions.”
  2. Another reason is that with a built-in http client, we can easily use it in the new REPL (thanks Java 9!) without needing to bring in another library.
  3. Finally, this way the Java platform is free to use a high quality http client for other Java platform features without needing a dependency on an external third-party library.

This question and the thoughtful answer #3 have been brought to you by The Audience from my talk on Java 9 with the Philly Java Users Group. Thanks Philly JUG!

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Philly JUG Introduction to Java 9

Recently I had the pleasure of doing a presentation for the Philly Java Users Group about the exciting new features coming to Java 9.

We covered what I considered to be the highest-priority items that would have the broadest interest:

  • Module System
  • REPL
  • Multi-Release JARS
  • Milling Project Coin
  • Process API
  • HttpClient API

For those who missed the talk (or who just want to go back and review) the slides are available online and contain links to original Java 9 documentation, blog posts and github code covering much of the presentation content.

Thanks to all of the Philly JUG members who came to the talk on Java 9, and I look forward to seeing you at many JUG meetings to come!

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Filed under Java 9