Hello amanullah
Follow my tips below for part 2 and 3:
Scenarios with solutions:
1. Cade Book
2. Enterprise Enterprise JavaBean 3.0 by Bill Burke Book - chapter 21.
3. epractizelab Simulator -
http://www.epractizelabs.com/certification/sun/scea-5-part23-exam.html. I can not tell if it's a good product because I did not buy.
Design Decisions
1. POJO in Action Book by Chris Richardson Book.
2. Domain Drive Design by Erick Vans Book.
3.
Patterns of Enterprise Application Architecture by Martin Fowler Book.
good studies.