I have a demo and source links below. Check out the servlet. This is a working example.
http://demogwtgdataoauth.appspot.com/ - demo http://code.google.com/p/gwt-examples/wiki/DemoGwtGData - wiki http://code.google.com/p/gwt-examples/source/browse/trunk/DemoGWTGDataOAuth/src/org/gonevertical/demo/server/servlet/Servlet_AskForAccess.java - servlet that does the job Hope that helps, Brandon
