i passed this darn exam with the help of khalid mughal , not a bad book at all , and some cool links. used alot of mocks and a lot different study guides...
　　http://www.javaranch.com
　　http://java.ditmas.net
　　
　　both of these links are real cool...
　　there was alot of similar questions in my exam from these dumps but not alot of exact ones , so i would say u should really know ur stuff but please do go thru these dumps ;), for the packages hierarchys i recommend the second link which is great ! i passed and u r next hahahha
　　best of luck every1