Oracle Web service Date Returnes Null in Java Code but Not in SOAP UI -

i trying call web service far know implemented oracle. need date web service. here part of code generated web service client in netbeans:

@webmethod(operationname = "lastenabled", action = "lastenabled") @webresult(name = "lastenabledoutput", targetnamespace = "something",partname = "parameters") public lastenabledoutput lastenabled(     @webparam(name = "sdate-lastenabledinput", targetnamespace = "something", partname = "parameters")     sdatelastenabledinput parameters); 

and code lastenabledoutput:

@xmlaccessortype(xmlaccesstype.field) @xmltype(name = "", proporder = { "_return" }) @xmlrootelement(name = "lastenabledoutput") public class lastenabledoutput {  @xmlelement(name = "return", required = true) @xmlschematype(name = "date") protected xmlgregoriancalendar _return;  public xmlgregoriancalendar getreturn() {     return _return; }  public void setreturn(xmlgregoriancalendar value) {     this._return = value; }  } 

and how call web service:

lastenabledoutput output = webservice.lastenabled(input); xmlgregoriancalendar xmlgregoriancalendar = output.getreturn(); gregoriancalendar calendar = xmlgregoriancalendar.togregoriancalendar(); date date = calendar.gettime(); 

webservice.lastenabled(input) returns lastenabledoutput object value of output.getreturn() in code above null. however, in soap ui, tested webservice , returns valid answer: request:

<soapenv:envelope xmlns:soapenv="a url" xmlns:pkg="a url">   <soapenv:header/>     <soapenv:body>        <pkg:sdate-lastenabledinput>          <pkg:telno-varchar2-in>some phone number</pkg:telno-varchar2-in>          <pkg:serviceid-number-in>10</pkg:serviceid-number-in>          <pkg:enable-boolean-in>true</pkg:enable-boolean-in>        </pkg:sdate-lastenabledinput>    </soapenv:body> </soapenv:envelope> 

response:

<soap:envelope xmlns:soap="a url">  <soap:body>    <lastenabledoutput xmlns="a url">      <return>07-jul-15</return>    </lastenabledoutput>  </soap:body> </soap:envelope> 

it may helpful there other methods in web service other return types work correctly same way called method. how can solve problem?