Exception while creating dynamic WebService Client

[sumit jindal]

hello

I am getting this exception

Exception in thread "main" org.apache.axis2.AxisFault:
System.Web.Services.Protocols.SoapException: Server was unable to process
request. ---> System.NullReferenceException: Object reference not set to an
instance of an object.


This is my code

objExecute is the method Name

public class DynamicBigTree {

     public static OMElement createPayLoad() {
        OMFactory fac = OMAbstractFactory.getOMFactory();

        OMNamespace omNs = fac.createOMNamespace(
                      "http://ws.apache.org/axis2/xsd";, "q0");
        OMElement method = fac.createOMElement("objExecute", omNs);

        OMElement value = fac.createOMElement("strAppCode", omNs);
        value.setText("IVR");
        method.addChild(value);

        value = fac.createOMElement("strVenueCode", omNs);
        value.setText("TSTC");
        method.addChild(value);


        return method;
}
    public static void main(String[] args) throws AxisFault,
MalformedURLException {

         ServiceClient serviceClient = new ServiceClient(
                 null,
                 new URL("http://XXX?wsdl";),
                 null,
                 null);
         OMElement res = serviceClient.sendReceive(new QName("
http://ws.apache.org/axis2","wmTrans";) ,createPayLoad());
         System.out.println(res);


    }
}



I want to create a WebService Client Dynamically DII

pls help


sumit