单项选择题

What is the result？（）

A.b,3
B.b,8
C.b,13
D.f,3
E.f,8
F.f,13
G.Compilation fails.
H.An exception is thrown at runtime.

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单项选择题

Given two files， GrizzlyBear.java and Salmon.java：

If both classes are in the correct directories for their packages， and the Mammal class correctly defines the findSalmon（） method， which change allows this code to compile？（）

A.add import animals. mammals.*； at line 2 in Salmon.java
B.add import animals.fish.*； at line 2 in GrizzlyBearjava
C.add import animals.fish.Salmon.*； at line 2 in GrizzlyBear.java
D.add import animals. mammals.GrizzlyBear*； at line 2 in Salmon.java

多项选择题

And MainClass exists in the /apps/com/company/application directory. Assume the CLASSPATH environment variable is set to "." （current directory）.Which two java commands entered at the command line will run MainClass？（）

A.java MainClass if run from the /apps directory
B.java com.company.application.MainClass if run from the /apps directory
C.java -classpath /apps com.company.application.MainClass if run from any directory
D.java-classpath . MainClass if run from the /apps/com/company/application directory
E.java -classpath /apps/com/company/application：. MainClass if run from the /apps directory
F.java com.company.application.MainClass if run from the /apps/com/company/application directory

单项选择题

Given the following directory structure：

And the following command line invocation：
javac –d classes source/Utils.java
Assume the current directory is bigProject， what it the result？（）

A.If the compile is successful， Utils.class is added to the source directory.
B.The compiler returns an invalid flag error.
C.If the compile is successful， Utils.class is added to the classes directory.
D.If the compile is successful， Utils.class is added to the bigProject directory.