Click the Exhibit button. Given the fully-qualified class names: com.foo.bar.Dog com.foo.bar.blatz.Book com.bar.Car com.bar.blatz.Sun Which graph represents the correct directory structure for a JAR file from which those classes can be used by the compiler and JVM?（）

单项选择题Given: When line 15 is reached, how many objects are eligible for the garbage collector?（）

A.0
B.1
C.2
D.3
E.4
F.5

单项选择题Given a class Repetition: Which code should be inserted at line 1 of Demo.java to compile and run Demo to print pizzapizza ?（）

A.import utils.*;
B.static import utils.*;
C.import utils.Repetition.*;
D.static import utils.Repetition.*;
E.import utils.Repetition.twice();
F.import static utils.Repetition.twice;
G.static import utils.Repetition.twice;

单项选择题Given: Which code fragment, inserted at line 23, allows the code to compile?（）

A.df = new DateFormat();
B.df = Date.getFormat();
C.df = date.getFormat();
D.df = DateFormat.getFormat();
E.df = DateFormat.getInstance();

单项选择题Given: Which regular expression, inserted at line 12, correctly splits test into Test A , Test B , and Test C ?（）

A.String regex=""；
B.String regex=" ."；
C.String regex=".*"；
D.String regex="\\s"；
E.String regex="\\.\\s*"；
F.String regex="\\w[\.]+"；

单项选择题Given: What is the result when the programmer attempts to compile the code and run it with the command java Converter 12?（）

A.It is true that j==i.
B.It is false that j==i.
C.An exception is thrown at runtime.
D.Compilation fails because of an error in line 13.