316: Mainline

By way of summary, the following are complete definitions of the Attraction, Movie, and Symphony classes that serve from here through Chapter 37. They include all that has been developed so far, plus two additional instance variables, title and poster, which are used in Chapter 31:

public abstract class Attraction { 
 // First, define instance variables: 
 public int minutes; 
 public String title, poster;                                    
 // Define constructors: 
 public Attraction () {minutes = 75;} 
 public Attraction (int m) {minutes = m;} 
 // Define getters and setters: 
 public int getMinutes () {return minutes;} 
 public void setMinutes (int m) {minutes = m;} 
 // Define rating as an abstract method: 
 public abstract int rating () ; 
 // Define category as an abstract method: 
 public abstract String category () ;  
 // Define describe: 
 public void describe () { 
  System.out.println(  
   category() + " with rating " 
   + rating() + " lasts "  
   + getMinutes() + " minutes"  
  );  
 }  
} 

public class Movie extends Attraction { 
 // First, define instance variables: 
 public int script, acting, direction; 
 // Define zero-parameter constructor: 
 public Movie () {script = 5; acting = 5; direction = 5;} 
 // Define one-parameter constructor: 
 public Movie (int m) {super(m);}  
 // Define three-parameter constructor: 
 public Movie (int s, int a, int d) { 
  script = s; acting = a; direction = d; 
 }  
 // Define four-parameter constructor: 
 public Movie (int s, int a, int d, int m) {  
  this(s, a, d); 
  minutes = m; 
 }  
 // Define rating: 
 public int rating () {return script + acting + direction;} 
 // Define category: 
 public String category () {return "Movie";} 
} 

public class Symphony extends Attraction { 
 // First, define instance variables: 
 public int music, playing, conducting; 
 // Define zero-parameter constructor: 
 public Symphony () {music = 5; playing = 5; conducting = 5;} 
 // Define one-parameter constructor: 
 public Symphony (int m) {super(m);}  
 // Define three-parameter constructor:  
 public Symphony (int s, int a, int d) {  
  music = s; playing = a; conducting = d;  
 }  
 // Define four-parameter constructor: 
 public Symphony (int s, int a, int d, int m) {  
  this(s, a, d); 
  minutes = m; 
 }  
 // Define rating: 
 public int rating () {return music + playing + conducting;} 
 // Define category: 
 public String category () {return "Symphony";} 
}