This week's book giveaway is in the OCMJEA forum. We're giving away four copies of OCM Java EE 6 Enterprise Architect Exam Guide and have Paul Allen & Joseph Bambara on-line! See this thread for details.
saied, it really varies from person to person. But more time is need to get a better idea on Threads,Collections & Innerclasses
Ps:- Dont read mearly for the sake of exam, prepare in such a way that you understand the concept of java very well so that you can face any type of questions in exams as well as in interviews. [ July 27, 2005: Message edited by: Srinivasa Raghavan ]