1018: Mainline

With the RatingServer class defined, if only you had access to an instance of that class, and did not mind running serverRating on your own computer, you could substitute serverRating wherever your program would otherwise use the rating method defined in the Movie class.

For example, the observer defined in Segment 988 uses the rating method, so you could make the following substitution, with serverRating replacing rating.

// Replaced                                                      
// row.add(new Integer(movie.rating()));                         
// Substituted in                                                
row.add(new Integer((new RatingServer()).serverRating(movie)));