789: Mainline

Consider, for example, the movie observer, defined separately from the application class, as follows. As written, you cannot even compile the definition, because the getMeter and getMovie getters are defined in the MovieApplication class, not the MovieObserver class.

import java.util.*; 
public class MovieObserver implements Observer {                 
 public void update (Observable observable, Object object) {             
  getMeter().setValue(getMovie().rating());             // BUG! 
  getMeter().setTitle(getMovie().getTitle());           // BUG! 
 }                                                       
}