Java SE 11 Programmer I: 1Z0-815

Given:

It is required that if p instanceof Pair then p.isValid() returns true.

Which is the smallest set of visibility changes to insure this requirement is met?

A. setLeft and setRight must be protected.

B. left and right must be private.

C. isValid must be public.

D. left, right, setLeft, and setRight must be private.

Given the code fragment:

Which "for" loop produces the same output?

A. Option A

B. Option B

C. Option C

D. Option D

Which two statements are correct about modules in Java? (Choose two.)

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

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

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

D. module-info.java cannot be empty.

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