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

Question

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

Quizplus · Accepted Answer

This code uses an unbounded wildcard (?), which means it can accept a list of any type. It does not specify an upper or lower bound for the type parameter.

Consider the Following Code Snippet