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Developing Web Services Using JAX-WS

import javax.jws.WebService; import javax.jws.WebMethod; @WebService(     name="Calculator",     serviceName="CalculatorService",     targetNamespace="http://yourserver.com/sample" ) public class Calculator {         public Calculator() {}                  @WebMethod(operationName="add", action="urn:Add")         public int add(int i, int j) {             int k = i +j ;             System.out.println(i + "+" + j +" = " + k);             return k;         } } import javax.xml.ws.WebServiceRef; public class JAXWSClient {   public static void main(String[] args) throws Exception {     @WebServiceRef(wsdlLocation = "http://localhost:8080/jaxws-webservice/CalculatorService?WSDL")     static CalculatorService service;     Calculator port = service.getCalculatorPort();     int ret = port.add(1, 10);     System.out.println(ret);   } }