Third Party API with Tomcat and Axis

I'm experimenting with creating web services in Java. I'm using tomcat and axis for this. I have successfully created and deployed some basic web services and now I want to create one using a 3rd party API. I follow the same exact procedure and when I deploy the service I check my list of deployed services through the axis page, but all my services have disappearred. Commenting out all 3rd party related methods does successfully deploy the service. Is there anything special/extra I have to do to get 3rd Party classes to function correctly in a web service?
Thanks in advance


what kind of third party API are using ?