I have comepleted SCJP and SCWCD certifications and looking to take up Web services 1.6 developer exam, after internet searching I see that Web services 1.6 is better choice than Web services 1.5 and I see the following link for Web services 1.6
I think RESTful Java with JAX-RS (O'Reilly) and REST in Practice : Hypermedia and Systems Architecture (O'Reilly) are also a good supplement to Java Web Services Up and Running.
Reading the Up and Running book is not good enough because it does not cover enough about Jersey.
Read Ivan's notes and Mikalin's notes are helpful.
subject: Web Services 1.6 certification material book