Hi, Im trying to develop a simple webservice with "EJB 3.0" and a simple client. I use: - jboss-4.2.2.GA - Eclipse My two Server classes: package myserv; | | import javax.ejb.Remote; | import javax.ejb.Stateless; | import javax.jws.WebService; | | | @Stateless | @WebService(endpointInterface = "myserv.ICalculatorBean") | @Remote(ICalculatorBean.class) | public class CalculatorBean | { | | public int add(int a, int b) | { | return a+b; | } | | public int subtract(int a, int b) | { | return a - b; | } | } package myserv; | | import java.rmi.Remote; | | import javax.jws.WebMethod; | import javax.jws.WebService; | import javax.jws.soap.SOAPBinding; | import javax.jws.soap.SOAPBinding.Style; | | @WebService | @SOAPBinding(style = Style.RPC) | public interface ICalculatorBean extends java.rmi.Remote | { | | public int add(int a, int b); | | public int subtract(int a, int b); | } My Client class: package myclient; | | import java.net.URL; | | import javax.xml.namespace.QName; | import javax.xml.rpc.Service; | import javax.xml.rpc.ServiceFactory; | | import myserv.*; | | public class Client { | public static void main(String[] args) throws Exception | { | System.out.println("Starting Test Client"); | URL url = new URL("http://127.0.0.1:8080/steffenwstest/CalculatorBean?wsdl"); | QName qname = new QName( | "http://myserv/", | "CalculatorBeanService"); | | System.out.println("Creating a service Using: \n\t" | + url + " \n\tand " + qname); | ServiceFactory factory = ServiceFactory.newInstance(); | Service remote = factory.createService(url, qname); | | System.out.println("Obtaining reference to a proxy object"); | ICalculatorBean proxy = (ICalculatorBean) remote.getPort(ICalculatorBean.class); | System.out.println("Accessed local proxy: " + proxy); | | | System.out.println("9+8= " + proxy.add(9, 8)); | } | } I get this Error: anonymous wrote : Exception in thread "main" java.lang.reflect.UndeclaredThrowableException | at $Proxy0.add(Unknown Source) | at myclient.Client.main(Client.java:30) | Caused by: java.rmi.RemoteException: Call invocation failed; nested exception is: | java.lang.UnsupportedOperationException: setProperty must be overridden by all subclasses of SOAPMessage | at org.jboss.ws.core.jaxrpc.client.CallImpl.invokeInternal(CallImpl.java:536) | at org.jboss.ws.core.jaxrpc.client.CallImpl.invoke(CallImpl.java:277) | at org.jboss.ws.core.jaxrpc.client.PortProxy.invoke(PortProxy.java:151) | ... 2 more | Caused by: java.lang.UnsupportedOperationException: setProperty must be overridden by all subclasses of SOAPMessage | at javax.xml.soap.SOAPMessage.setProperty(Unknown Source) | at org.jboss.ws.core.soap.SOAPMessageImpl.(SOAPMessageImpl.java:67) | at org.jboss.ws.core.soap.MessageFactoryImpl.createMessage(MessageFactoryImpl.java:161) | at org.jboss.ws.core.CommonSOAP11Binding.createMessage(CommonSOAP11Binding.java:59) | at org.jboss.ws.core.CommonSOAPBinding.bindRequestMessage(CommonSOAPBinding.java:156) | at org.jboss.ws.core.CommonClient.invoke(CommonClient.java:289) | at org.jboss.ws.core.jaxrpc.client.CallImpl.invokeInternal(CallImpl.java:517) | ... 4 more The error is thrown in this line: System.out.println("9+8= " + proxy.add(9, 8)); Note: - I compiled both server and client with Java 5.0 - I did copy the following files into /lib/endorsed: - jboss-saaj.jar - jboss-jaxws.jar - jboss-jaxrpc.jar - jaxb-api.jar - jaxb-impl.jar My server uses everything from \server\all\lib. My client uses everything from \client and \lib\endorsed. What more can I do? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4155459#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...