Thank you to all who helped me to clear my doubts. Just a note for those of you who are preparing to take the exam:
- lots of question on polymorphism, iheritance overriding, overloading and access modifiers.
- questions on generics and thread
- more than 10 drag and drop questions
- don't remember question on serialization
- some questions seems easy but tricky.
As long as you know what is asked and watch for any tricks... the exam is much better than ExamLab or K&B self test questions.