no class found

I am trying to run a web service client. The web service is deployed in oc4j app server. I get the following error when I try to run the client code.

java.lang.NoClassDefFoundError: javax/xml/rpc/ServiceFactory

I have jaxrpc-api.jar which contains the above class in the class path.

I also have these jar files in class path.

jaxrpc-impl.jar

jaxrpc-spi.jar

[393 byte] By [soumayaa] at [2007-11-26 20:06:14]