I've downloaded the latest (9.3.7.v20160115) Jetty from here.
Accourding to the documentation, the HTTP/2 has 4 sub-projects, one is http2-client.
I'm unable to find it. The only jars I have in http2 are:
What has happened with http2-client?
All Jetty components are available on Global Maven Repository system.
Here's the components belonging to org.eclipse.jetty.http2, along with the http2-client you are looking for.
Since there is nothing in the jetty-distribution that uses the http2-client (and associated alpn-client), and there is no way to use the http2-client through the server / webapp classloader isolation, its highly unlikely that it will show up on the jetty-distribution.
If you intend to use it standalone (not from a java web/app server), then use the components from maven central.
If your intention is to use it from a jetty server instance, you'll want to copy the components into place in your WEB-INF/lib directory for your webapp (be aware that you should have your http2-client and jetty server versions in lockstep if you attempt to do this, as you can potentially share many utility/io/http classes from jetty server classloader itself)