From: <johan_at_lodgon.com>
Date: Tue, 8 Jan 2013 19:20:34 +0000 (GMT)

Hi,

Currently, org.glassfish.tyrus.client.ClientManager has no zero-args
constructor.
However, javax.websocket.ContainerProvider requires a zero-args
constructor for the implementation of WebSocketContainer that should be
used:
 
Class c = Class.forName(clName);
return c.newInstance();

Adding a zero-args constructor in ClientManager fixed my problem.

- Johan