Issue with Importing Com. Sun. Jersey. Api. Client. Clientresponse;

I have a basic java project wherein I have imported the jersey-client-1.19.jar externally in my java build (using eclipse). I am trying to write a basic jersey client to make a RESTful call to a web service. As soon as I try to import the ClientResponse class, eclipse complains about -

the type javax.ws.rs.ext.runtimedelegate$headerdelegate cannot be resolved. It is indirectly referenced from required .class files.

Eclipse auto correct takes me to my build paths. But I have had no luck fixing this. Googled for this but did not find anything.

I am missing something basic here. Any help is appreciated.