A.Foo.beta（） is a valid invocation of beta（）.B.Foo.alph……

多项选择题Given： 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

单项选择题Given： What is the result？（）

A.w-f
B.f-p w-f
C.w-f b-f
D.f-p w-f b-f

单项选择题Click the Exhibit button. What is the output of the program shown in the exhibit？（）

A.300-100-100-100-100
B.300-300-100-100-100
C.300-300-300-100-100
D.300-300-300-300-100

单项选择题Given： What is the result？（）

A.No output is produced. 1 2 3
B.No output is produced. 2 3 4
C.No output is produced. 1 2 3 4
D.An exception is thrown at runtime. 1 2 3

多项选择题A developer is creating a class Book， that needs to access class Paper. The Paper class is deployed in a JAR named myLib.jar.  Which three， taken independently， will allow the developer to use the Paper class while compiling the Bookclass？（）

A.The JAR file is located at $JAVA_HOME/jre/classes/myLib.jar.
B.The JAR file is located at $JAVA_HOME/jre/lib/ext/myLib.jar..
C.The JAR file is located at /foo/myLib.jar and a classpath environment variable is set that includes /foo/myLib.jar/Paper.class.
D.The JAR file is located at /foo/myLib.jar and a classpath environment variable is set that includes /foo/myLib.jar.
E.The JAR file is located at /foo/myLib.jar and the Book class is compiled using javac - cp /foo/myLib.jar/Paper Book.java.
F.The JAR file is located at /foo/myLib.jar and the Book class is compiled using javac - classpath /foo/myLib.jar Book.java