String url = "http://webservices.amazon.com/onca/soap?Service=AWSSimpleQueueService";
try {
Call call = new Call();
call.setTo(new EndpointReference(AddressingConstants.WSA_TO, url));
call.setTransportInfo(Constants.TRANSPORT_HTTP, Constants.TRANSPORT_HTTP, false);
call.invokeNonBlocking(operation, element, specificCallbackObject);
} catch (AxisFault axisFault) {
axisFault.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}