Home Segments Top Top Previous Next 
308: Mainline 
 

To do the work, you define the describe 
instance method in both the Movie class and the Symphony 
class.



At first glance, the following definition of describe in the 
Movie class, might seem likely to fail, because there is no target 
for either the rating method or the getMinutes method.  By 
convention, however, because the target and the field-selection operator 
are absent, the rating and getMinutes methods are handed the 
same class-instance target as that handed to describe.  Thus, 
rating and getMinutes have implicit targets.


public class Movie extends Attraction {
 // Rest of Movie definition
 // Define rating:
 public int rating () {
  return script + acting + direction;
 }
 // Define describe
 public void describe () {              
  System.out.println(                   
   "Movie with rating "                 
   + rating() + " lasts "               
   + getMinutes() + " minutes"          
  );                                    
 }                                      
}