A: Exercise 9.1 in the book. The topic is build your own exception class.
B: Exercise 9.4 in the book. The topic is the NullPointerException, a specialization of RuntimeException.
C: Exercise 9.7 in the book. Covers the topic, matching exceptions.
D: Exercise 9.11 in the book. The topic is exceptions in constructors.
E1: Exercise 9.14. The topic is the finally clause.
E2: Exercise 9.10. The topic is exception and inheritance.