10.17.3. Fault Handling

An implementation may throw a SOAPFaultException 
public void throwSoapFaultException()
{
   SOAPFactory factory = SOAPFactory.newInstance();
   SOAPFault fault = factory.createFault("this is a fault string!", new QName("http://foo", "FooCode"));
   fault.setFaultActor("mr.actor");
   fault.addDetail().addChildElement("test");
   throw new SOAPFaultException(fault);
}
or an application specific user exception 
public void throwApplicationException() throws UserException
{
   throw new UserException("validation", 123, "Some validation error");
}

Note

In case of the latter JBossWS generates the required fault wrapper beans at runtime if they are not part of the deployment