[ http://jira.jboss.com/jira/browse/JBWS-203?page=comments#action_12386318 ] Manjunatha HG commented on JBWS-203: ------------------------------------ here the code:Interface: package com.javasrc.webservices.age; import java.rmi.Remote; import java.rmi.RemoteException; public interface Age extends Remote { public String age( String name, Integer age ) throws RemoteException; } Implimentation of of the interface: package com.javasrc.webservices.age; public class Age_Imp { public String age( String name, Integer age ) { return name + " is " + age + " years old!"; } } client program: package com.javasrc.webservices.age; import javax.xml.rpc.Service; import javax.xml.rpc.ServiceFactory; import com.javasrc.webservices.age.Age; import javax.xml.namespace.QName; import java.net.URL; public class AgeClient { public static void main( String[] args ) throws Exception { if( args.length < 3 ) { System.out.println( "Usage: AgeClient urlstr name age" ); System.exit( 0 ); } String urlstr = args[ 0 ]; String argument = args[ 1 ]; String argument2 = args[ 2 ]; System.out.println( "Contacting webservice at " + urlstr ); URL url = new URL(urlstr); QName qname = new QName("http://age.webservices.javasrc.com/";, "AgeService"); ServiceFactory factory = ServiceFactory.newInstance(); Service service = factory.createService( url, qname ); Age age = ( Age ) service.getPort( Age.class ); System.out.println( "age.age(" + argument + ", " + argument2 + ")" ); System.out.println( "output:" + age.age( argument, new Integer( argument2 ) ) ); } } i am getting this error Contacting webservice at http://ccgtsd8qzxf1s:8080/agews/age?wsdl log4j:WARN No appenders could be found for logger (org.apache.axis.i18n.ProjectResourceBundle). log4j:WARN Please initialize the log4j system properly. age.age(manju, 29) java.lang.NullPointerException at org.apache.axis.client.Call.getTypeMapping(Call.java:2402) at org.apache.axis.client.Call.setReturnType(Call.java:1230) at org.apache.axis.client.Call.setOperation(Call.java:1412) at org.apache.axis.client.AxisClientProxy.invoke(AxisClientProxy.java:369) at $Proxy0.age(Unknown Source) at com.javasrc.webservices.age.AgeClient.main(AgeClient.java:35) Exception in thread "main" how to resolve this -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira