多项选择题

Which three statements concerning the use of the java.io.Serializable interface are true？（）

A.Objects from classes that use aggregation cannot be serialized
B.An 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 and deserialization
D.The values in fields with the transient modifier will NOT survive serialization and deserialization
E.It is legal to serialize an object of a type that has a supertype that does NOT implement java.io.Serializable

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热门试题

单项选择题Given that the current directory is empty， and that the user has read and write privileges to the current directory， and the following： Which statement is true？（）

A.Compilation fails.
B.Nothing is added to the file system.
C.Only a new file is created on the file system.
D.Only a new directory is created on the file system.
E.Both a new file and a new directory are created on the file system.

单项选择题If the user types the password aiko when prompted， what is the result？（）

A.password：got
B.password：got aiko
C.password：aiko；got aiko
D.An exception is thrown at runtime.
E.Compilation fails due to an error on line 8.

单项选择题What is the result？（）

A.Compilation fails.
B.An exception is thrown at runtime.
C.An instance of Forest is serialized.
D.An instance of Forest and an instance of Tree are both serialized.

单项选择题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（）；

单项选择题Given that the current directory is empty， and that the user has read and write permissions， and the following： Which statement is true？（）

A.Compilation fails.
B.The file system has a new empty directory named dir.
C.The file system has a new empty directory named newDir.
D.The file system has a directory named dir， containing a file f1.txt.
E.The file system has a directory named newDir， containing a file f1.txt.