HF edition 2 says as
"The updated SCWCD exam is called “Sun Certified Web Component Developer for the Java Platform, Enterprise Edition 5” (CX-310-083), but don’t get confused by the title. The updated exam is still designed for Java EE v1.4 and for the servlet v2.4 and
JSP v2.0 specifications."
I have the older version book (1.4). Should that be enough then?