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单项选择题

A class games.cards.Poker is correctly defined in the jar file Poker.jar. A user wants to execute the main method of Poker on a UNIX system using the command：java games.cards.
Poker What allows the user to do this？（）

A.put Poker.jar in directory /stuff/java， and set the CLASSPATH to include /stuff/java
B.put Poker.jar in directory /stuff/java， and set the CLASSPATH to include /stuff/java/*.jar
C.put Poker.jar in directory /stuff/java， and set the CLASSPATH to include /stuff/java/Poker.jar
D.put Poker.jar in directory /stuff/java/games/cards， and set the CLASSPATH to include /stuff/java

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单项选择题Given： What is the result？（）

A.s 14
B.s 16
C.s 10
D.Compilation fails.

单项选择题Given： What is the result？（）

A.Compilation fails.
B.An exception is thrown at runtime.
C.doStuff x = 6 main x = 6
D.doStuff x = 6 main x = 7
E.doStuff x = 7 main x = 6

单项选择题Given： What is the result？（）

A.1
B.2
C.12
D.Compilation fails.
E.No output is produced.
F.An exception is thrown at runtime.

单项选择题Given： When the doSomething method is called， after which line does the Object created in line 5 become available for garbage collection？（）

A.Line 5
B.Line 6
C.Line 7
D.Line 8
E.Line 9

单项选择题Click the Exhibit button. Which graph represents the correct directory structure for a JAR file from which those classes can be used by the compiler and JVM？（）

A.Jar A
B.Jar B
C.Jar C
D.Jar D
E.Jar E