"SCJP 1.6版考題 146" 修訂間的差異
出自 陳富國維基館
(新頁面: Given: 1. import java.io.*; 2. public class Foo implements Serializable{ 3. public int x, y; 4. public Foo(int x, int y){this.x = x; this.y = y;} 5. 6. private void writeO...) |
(無差異)
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於 2013年3月30日 (六) 03:05 的最新修訂
Given:
1. import java.io.*;
2. public class Foo implements Serializable{
3. public int x, y;
4. public Foo(int x, int y){this.x = x; this.y = y;}
5.
6. private void writeObject(ObjctOutputStream s)
7. throws IOException{
8. s.writeInt(x); s.writeInt(y);
9. }
10.
11. private void readObject(ObjectInputStream s)
12. throws IOException, ClassNotFoundException{
13.
14. //insert code here
15.
16. }
17.}
Which code, inserted at line 14, will allow this class to correctly serialize and deserialize?
A. s.defaultReadObject();
B. this = s.defaultReadObject(),
C. y = s.readInt(); x = s.readInt();
D. x = s.readInt(); y = s.readInt();
解答
Ans: D
解說: 寫入串流與讀出串流的順序要一致
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