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calling a webservice

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I have generated webservices stub using axis 1.4 tool kit.
When I am calling the webservice with the below client it's error

import org.apache.axis.client.Call;
import org.apache.axis.client.Service;

import com.hp.oo.service.ws.SendStatusRequest;
import com.hp.oo.service.ws.SendStatusResponse;

import javax.xml.namespace.QName;

public class testClient {
public static void main(String [] args) {
try {
String endpoint = "http://localhost:7001/axis/services/HPOOWebService";

Service service = new Service();
Call call = (Call) service.createCall();

call.setTargetEndpointAddress( new java.net.URL(endpoint) );
call.setOperationName(new QName("http://com/hp/oo/service/", "sendStatus"));

SendStatusRequest req = new SendStatusRequest();

SendStatusResponse res = (SendStatusResponse) call.invoke( new Object[] { req} );

System.out.println("Return Value" + res.getErrorCode() + "'");
System.out.println("Return Value" + res.getErrorText() + "'");
} catch (Exception e) {
- Exception:
org.xml.sax.SAXException: Deserializing parameter 'sendStatusReturn': could not find deserializer for type {urn:com.hp.oo.service}SendStatusResponse
at org.apache.axis.message.RPCHandler.onStartChild(RPCHandler.java:277)
at org.apache.axis.encoding.DeserializationContext.startElement(DeserializationContext.java:1035)
at org.apache.axis.message.SAX2EventRecorder.replay(SAX2EventRecorder.java:165)
at org.apache.axis.message.MessageElement.publishToHandler(MessageElement.java:1141)
at org.apache.axis.message.RPCElement.deserialize(RPCElement.java:345)
at org.apache.axis.message.RPCElement.getParams(RPCElement.java:384)
at org.apache.axis.client.Call.invoke(Call.java:2467)
at org.apache.axis.client.Call.invoke(Call.java:2366)
at org.apache.axis.client.Call.invoke(Call.java:1812)
at com.bt.client.testClient.main(testClient.java:44)
org.xml.sax.SAXException: Deserializing parameter 'sendStatusReturn': could not find deserializer for type {urn:com.hp.oo.service}SendStatusResponse

can any one help me to resolve this
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