单项选择题
Given a vaid DateFormat object named df， and
What updates d’s value with the date represented by ds？（）
A.18.d=df.parse（ds）；
B.18.d=df.getDate（ds）；
C.18.try{19.d=df.parse（ds）；20. }catch（ParseException e）{ }
D.18.try{19.d=df.getDate（ds）；20. }catch（ParseException e）{ }
相关考题
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多项选择题
Giventhatcisareferencetoavalidjava.io.Consoleobject，whichtwocodefragmentsreadalineoftextfromtheconsole？（）
A.String s = c.readLine（）；
B.char[ ] c = c.readLine（）；
C.String s = c.readConsole（）；
D.char[ ] c = c.readConsole（）；
E.String s = c.readLine（"%s"， "name "）；
F.char[ ] c = c.readLine（"%s"， "name "）； -
多项选择题
Whichthreestatementsconcerningtheuseofthejava.io.Serializableinterfacearetrue？（）
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 -
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.
