Invoke a GWT RPC service from Java directly

Question

Is there an easy way to invoke a GWT RPC service endpoint directly from Java code? I mean real Java code, not Java code compiled down into javascript.

I ask because

Answer 1

GWT SyncProxy allows you to access GWT RPC services (e.g methods) from pure Java (not JSNI) code. Thus you can use it to test your RPC interface.

See http://www.gdevelop.com/w/blog/2010/01/10/testing-gwt-rpc-services/ for details.