import java.io.*;
import java.util.*;
import java.lang.*;

public class cd implements Serializable {

   // the private data fields.
   
   private String Title;
   private String Artist;
   private String Composer;
   private Vector Tracks;
   private String cover_URL;
      
   // constructor.
   
   public cd(String A, String C, String T, Vector Tr, String c_url) {
      Artist = A;
      Composer = C;
      Title = T;
      Tracks = Tr;
      cover_URL = c_url;
   }
   
   // public methods - accessing and returning the private fields.
   
   public String getArtist() {  
      return Artist;
   }
   public String getComposer() {
      return Composer;
   }
   public String getTitle() {
      return Title;
   }
   public Vector getTracks() {
      return Tracks;
   }
   public String getcover_URL() {
      return cover_URL;
   }
   
   // public method for printing the contents of the CD object.
   
   public void printAll() {
      System.out.println("----------------------------------------------------------------------");
      System.out.println("TITLE:    " + Title);
      System.out.println("ARTIST:   " + Artist);
      System.out.println("COMPOSER: " + Composer);
      System.out.println("URL:      " + cover_URL);
      System.out.println("\nTRACKS:\n");
      
      for (int i = 0; i < Tracks.size(); ++i) {
         String track = (String)Tracks.elementAt(i);
         if (track.equals("*")) break;
         else System.out.println(track);
      }
      System.out.println("----------------------------------------------------------------------");
   }
   
   // ******************************* MAIN ****************************************
   // uses the same test file as collection.java (containing 6 data sets). However, the
   // program will only read in the 1st data set and construct and print 1 CD instance.
   // (see documentation for the design algorithm). 
  
   public static void main(String args []) throws IOException {      
      
      // sets up a file reading object to the test file 'cd.txt' - which must be in the local
      // directory.
      
      try {
      
         BufferedReader in = new BufferedReader(new FileReader("cd.txt"));
      
         // constructs new Vector to hold the track Strings.
      
         Vector TR = new Vector();
         String track;
     
             
         // Assigns the 1st 3 lines of the file to corresponding tempory Strings.
         
         String A = in.readLine();
         String C = in.readLine();
         String T = in.readLine();
         String U = in.readLine();
         
         // reads each line of the file into the tempory Vector TR until the end-of-data-set
         // marker is located.
         
         while (!(track = in.readLine()).equals("*")) {
            TR.addElement(track);
         }
        
         // constructs CD instance called 'test' by passing tempory objects to constructor.
         
         cd test = new cd(A, C, T, TR, U);
         
         // tests the successfull reading/assigning/constructing by printing contents to screen.
         
         test.printAll();
         System.exit(0);
      }
      
      catch (FileNotFoundException e) {  // to handle the absence of the test file cd.txt.
         System.out.println("\n\n++ERROR - File not found.");
      }              
      catch (IOException e)  {           // to handle IO exceptions.
         System.out.println("\n\n++ERROR - IO error.");
      }
      catch (NullPointerException e) {   // to handle absence of end-of-data-set marker in file.
         System.out.println("\n\n++ERROR - The test file contains an illegal format.");
      }
   }
}