申論題

第34題 Which four statements are true? (Choose four.) (A) Has-a relationships should never be encapsulated. (B) Has-a relationships should be implemented using inheritance. (C) Has-a relationships can be implemented using instance variables. (D) Is-a relationships can be implemented using the extends keyword. (E) Is-a relationships can be implemented using the implements keyword. F. The relationship between Movie and Actress is an example of an is-a relationship. G. An array or a collection can be used to implement a one-to-many has-a relationship.