API Contents - SCJP Sun Certified Programmer for Java Platform SE6 - page 333

7. FileOutputStream fos =
8. new FileOutputStream(“a.ser”);
9. new ObjectOutputStream(fos).writeObject(ref);
10. FileInputStream fis =
11. new FileInputStream(“a.ser”);
12. A ref2 = (A)
13. new ObjectInputStream(fis).readObject();
14. System.out.print(ref2.a);
15. }
16. }
17.
18. class A implements Serializable {
19. public int a;
20.
21. public A(int a) {
22. this.a = a;
23. System.out.print(“A”);
24. }
25. }
A. A0
B. AA12
C. A12
D. An exception is thrown at runtime because the A class does not have a no-argument
constructor.
E. The code does not compile because the A class does not properly implement the Seri-
alizable interface.
17. What is the result of the following code?
4. NumberFormat n =
5. NumberFormat.getPercentInstance(Locale.US);
6. double d = 3.1415;
7. System.out.println(n.format(d));
A. 314%
B. 3.1415%
C. 314.15%
D. 3.14%
E. The code does not compile.