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
A.Line 16 B.Line 17 C.Line 18 D.Line 19
A.Exception B.A NullPointerException is thrown at runtime. C.Compilation fails because of an error in line 20. D.Compilation fails because of an error in line 14.