多項(xiàng)選擇題

11.public class Commander{
12.public static void main（String[]args）{
13.String myProp=/insert code here/
14.System.out.println（myProp）；
15.}
16.}
and the command line：
java-Dprop.custom=gobstopper Commander
Which two，placed on line13，will produce the output gobstopper？（）

A.System.load（"prop.custom"）；
B.System.getenv（"prop.custom"）；
C.System.property（"prop.custom"）；
D.System.getProperty（"prop.custom"）；
E.System.getProperties（）.getProperty（"prop.custom"）；

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單項(xiàng)選擇題

package com.sun.sjcp；
public class Commander{
public static void main（String[]args）{
//more code here
}
}
Assume that the class fileis located in /foo/com/sun/sjcp/，the current directory is/foo/，and that the classpath contains“.“（current directory）.
Which command line correctly runs Commander？（）

A.java Commander
B.java com.sim.sjcp.Commander
C.java com/sun/sjcp/Commander
D.java-cpcom.sun.sjcp Commander
E.java-cpcom/sun/sjcp Commander

單項(xiàng)選擇題

public classYippee{
public static void main（String[]args）{
for（intx=1；xSystem.out.print（args[x]+""）；
}
}
}
and two separate command line invocations：j
avaYippee
javaYippee1234
What is the result？（）

A.No output is produced.       123
B.No output is produced.        234
C.No output is produced.       1234
D.An exception is thrown at runtime.        123
E.An exception is thrown at runtime.         234
F.An exception is thrown at runtime.        1234

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public classYippee{ public static void main（String[]args）{ for（intx=1；xSystem.out.print（args[x]+""）； } } } and two separate command line invocations：j avaYippee javaYippee1234 What is the result？（）

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public classYippee{
public static void main（String[]args）{
for（intx=1；xSystem.out.print（args[x]+""）；
}
}
}
and two separate command line invocations：j
avaYippee
javaYippee1234
What is the result？（）