I am trying generate "Web Services Proxy Client" as per http://www.oracle.com/technetwork/developer-tools/adf/learnmore/72-wsprxyclient-pojodc-hands-on-321228.pdf , In Step 8 if i Provide "Root Package for Generated Types" i am getting following error
The WSDL document is invalid for the following reason:
Unexpected Exception Creating a WSDL model
Not sure what version of Jdev you are using. But ,we earlier had problems when generating proxies while using JDev v22.214.171.124.0. Later, tried using v126.96.36.199.0 and we were able to generate successfully. May be you can try the same.