Consider the following code snippet: Public static void reverse(List list) { . . . } Which of the following statements about this code is correct? A) This is an example of a wildcard with an upper bound. B) This is an example of a wildcard with a lower bound. C) This is an example of an unbounded wildcard. D) This code is illegal.

Question

Consider the following code snippet:
Public static void reverse(List<? super E> list) { . . . }
Which of the following statements about this code is correct?
A) This is an example of a wildcard with an upper bound.
B) This is an example of a wildcard with a lower bound.
C) This is an example of an unbounded wildcard.
D) This code is illegal.

Quizplus · Accepted Answer

This is an example of a wildcard with an upper bound. The wildcard ? super E specifies that the list can contain elements of type E or any of its superclasses.

Consider the Following Code Snippet