495: Mainline

Of course, the program in Segment 494 goes to a lot of trouble to produce int values from the characters in a file, just to display them for you as characters. Accordingly, the next example uses the int values to initialize Movie instances, each of which becomes the target of the rating method.

import java.io.*; 
public class Demonstrate { 
 public static void main(String argv[]) throws IOException { 
  FileInputStream stream = new FileInputStream("input.data");  
  InputStreamReader reader = new InputStreamReader(stream); 
  StreamTokenizer tokens = new StreamTokenizer(reader); 
  while (tokens.nextToken() != tokens.TT_EOF) {  
   int x = (int) tokens.nval; 
   tokens.nextToken(); int y = (int) tokens.nval; 
   tokens.nextToken(); int z = (int) tokens.nval; 
   Movie m = new Movie(x, y, z); 
   System.out.println("Rating: " + m.rating());  
  } 
  stream.close(); 
 } 
}