第142題

Assuming that the serializeBanana() and the deserializeBanana() methods will correctly use Java serialization and given:
13. import java.io.*;
14. class Food implements Serializable{int good = 3;}
15. class Fruit extends Food{int juice = 5;}
16. public class Banana extends Fruit{
17. int yellow = 4;
18. public static void main(String[] args) {
19. Banana b = new Banana(); Banana b2 = new Banana();
20. b.serializeBanana(b); //assume correct serialization
21. b2 = b.deserializeBanana(); //assume correct
22. System.out.println("restore " + b2.yellow + b2.juice + b2.good);
24. }
25. //more Banana methods go here
50. }
What is the result?
A. restore 400
B. restore 403
C. restore 453
D. Compilation fails.
E. An exception is thrown at runtime.
答案：C
參考：10-5 多重串接

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20. b.serializeBanana(b); // 序列化b
21. b2 = b.deserializeBanana(); //反序列化 b 給 b2, 此時 b2 的實體跟b 一樣.