How do you test code that uses wildcards (?)?

wildcards, Java testing, code testing, generics

This document explains how to test code that utilizes wildcards in Java programming. It covers various aspects of testing generics and wildcards.


        // Example of using Java wildcards
        public class WildcardExample {
            public static void printList(List> list) {
                for (Object elem : list) {
                    System.out.println(elem);
                }
            }
    
            public static void main(String[] args) {
                List stringList = Arrays.asList("Hello", "World");
                List integerList = Arrays.asList(1, 2, 3);
                
                printList(stringList); // Testing with String List
                printList(integerList); // Testing with Integer List
            }
        }