As mentioned earlier, when WSDL was created for our Course web service, the argument for the getCourse operation name was created as arg0. You can verify this by browsing to http://localhost:8080/CourseMgmtWSProject/courseService?xsd=1 and checking the getCourse type:
<xs:complexType name="getCourse">
<xs:sequence>
<xs:element name="arg0" type="xs:int"/>
</xs:sequence>
</xs:complexType>
Thus, the client-side-generated code (by wsimport) in CourseManagementService.getCourse also names the argument as arg0. It would be nice to give a meaningful name to arguments. This could be done easily be adding the @WSParam annotation in our web service implementation class, CourseManagementService ...
