import java.util.concurrent.ConcurrentHashMap; public class JSR166eCracker { public static void main(String[] args) { ConcurrentHashMap<String, Integer> map = new ConcurrentHashMap<>(); map.put("apple", 1); map.put("banana", 2); map.put("orange", 3); System.out.println("Map: " + map); map.put("apple", 4); System.out.println("Modified Map: " + map); } }