单项选择题
10. public class Foo implements java.io.Serializable {
11. private int x；
12. public int getX（） { return x； }
12.publicFoo（int x）{this.x=x； }
13. private void writeObject（ ObjectOutputStream s）
14. throws IOException {
15. // insert code here
16. }
17. }
Which code fragment， inserted at line 15， will allow Foo objects to be correctly serialized and deserialized？（）
A. s.writeInt（x）；
B. s.serialize（x）；
C. s.writeObject（x）；
D. s.defaultWriteObject（）；
相关考题
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单项选择题
Assuming that the serializeBanana2（） and the deserializeBanana2（） methods will correctly use Java serialization and given： import java.io.*； class Food {Food（） { System.out.print（”1”）； } } class Fruit extends Food implements Serializable { Fruit（） { System.out.print（”2”）； } } public class Banana2 extends Fruit { int size = 42； public static void main（String [] args） { Banana2 b = new Banana2（）； b.serializeBanana2（b）； // assume correct serialization b = b.deserializeBanana2（b）； // assume correct System.out.println（” restored “+ b.size + “ “）； } // more Banana2 methods } What is the result？（）
A. Compilation fails.
B. 1 restored 42
C. 12 restored 42
D. 121 restored 42
E. 1212 restored 42
F. An exception is thrown at runtime. -
单项选择题
Assuming that the serializeBanana（） and the deserializeBanana（） methods will correctly use Java serialization and given： import java.io.*； class Food implemertts Serializable {int good = 3；} class Fruit externds Food {int juice = 5；} public class Banana extends Fruit { int yellow = 4； public static void main（String [] args） { Banana b = new Banana（）； Banana b2 = new Banana（）； b.serializeBanana（b）； // assume correct serialization b2 = b.deserializeBanana（）； // assume correct System.out.println（”restore “+b2.yellow+ b2.juice+b2.good）； } // more Banana methods go here } What is the result？（）
A. restore 400
B. restore 403
C. restore 453
D. Compilation fails.
E. An exception is thrown at runtime. -
多项选择题
Whichthreeconcerningtheuseofthejava.io.Serializableinterfacearetrue？（）
A. Objects from classes that use aggregation cannot be serialized.
B. Art object serialized on one JVM can be successfully deserialized on a different JVM.
C. The values in fields with the volatile modifier will NOT survive serialization anddeserialization.
D. The values in fields with the transient modifier will NOT survive serialization anddeserialization.
E. It is legal to serialize an object of a type that has a supertype that does NOT implement java.io.Serializable.
