A.The compilation fails due to an error in line 1.

B.I am an array

C.I am an object

D.I am an object array

A.java.base exports all of the Java platforms core packages.

B.module-info.java cannot be empty.

C.By default, modules can access each other as long as they run in the same folder.

D.module-info.java can be placed in any folder inside module-path.

E.A module must be declared in module-info.java file.

A.Map: 0 Keys: 0 Values: 0

B.The compilation fails.

C.Map: 4 Keys: 4 Values: 4

D.Map: 4 Keys: 0 Values: 0

E.Map: 0 Keys: 4 Values: 4

A.null

B.A NoSuchElementException is thrown at run time.

C.Duke

D.A NullPointerException is thrown at run time.

A.javac -d /code /code/a/Test.java

B.java -cp /code a.Test

C.java /code/a/Test.java /code/b/Best.java

D.javac -d /code /code/a/Test

E.java /code/a/Test.java

F.javac -d /code /code/a/Test.java /code/b/Best.java