In addition to the above problem, i ve tried with wsrunclient to run the client program. but it also failed. C:\Projects\eclipseLambozworkspace\EchoService\build\classes>wsrunclient uk.co.r egdeveloper.client.EchoClient Starting Test Client Creating a service Using: http://127.0.0.1:8080/EchoService/EchoBean?wsdl and {http://webservice.regdeveloper.co.uk/jaws}EchoService Exception in thread "main" javax.xml.rpc.ServiceException: Failed to create fact ory: org.jboss.ws.core.jaxrpc.client.ServiceFactoryImpl at javax.xml.rpc.ServiceFactory.newInstance(ServiceFactory.java:110) at uk.co.regdeveloper.client.EchoClient.main(EchoClient.java:15) Caused by: java.lang.NoClassDefFoundError: org/jboss/util/NotImplementedExceptio n at java.lang.Class.getDeclaredConstructors0(Native Method) at java.lang.Class.privateGetDeclaredConstructors(Class.java:2357) at java.lang.Class.getConstructor0(Class.java:2671) at java.lang.Class.newInstance0(Class.java:321) at java.lang.Class.newInstance(Class.java:303) at javax.xml.rpc.ServiceFactory.newInstance(ServiceFactory.java:85) ... 1 more Pls help and explain. Srinivas View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4122468#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...