問題詳情

204.Given: 11. public class Person{ 12. private name; 13. public Person(String name){ 14. this.name = name; 15. } 16. public int hashCode(){ 17. return 420; 18. } 19. } Which statement is true?
(A) The time to find the value from HashMap with a Person key depends on the size of the map.
(B) Deleting a Person key from a HashMap will delete all map entries for all keys of type Person.
(C) Inserting a second Person object into a HashSet will cause the first Person object to be removed as aduplicate.
(D) The time to determine whether a Person object is contained in a HashSet is constant and does NOTdepend on the size of the map.

參考答案