import COM.odi.util.OSHashSet;

public class Numbber{
  //members of Numbber class
  int numbber;
  OSDate dateOfNumber;
  Journal journal;
  Volume volume;
  OSHashSet articles;

  public Numbber(){
  // constructor
  }

  public Numbber(int nm,OSDate dteOfNumber,Journal j1,Volume v1) {
  //constructor
    numbber = nm;
    dateOfNumber = dteOfNumber;
    journal = j1;
    volume = v1;
    articles = new OSHashSet();
  }
  
  // methods of Numbber class
  // method to add Article to the Numbber
  public void addArticle(Article article){
    if(articles.contains(article)){
        System.out.println("Article Already Exists  ");
        System.exit(0);
        }
    articles.add(article);
  }

  //method to get the date of the Numbber   
  public OSDate getNumberDate(){
    return dateOfNumber;
  }

  // method to get the number of articles i
  public int getNumberOfArticles(){
    return articles.size();
  }

  // method to get the number of Numbber
  public int getNumberOfNumber(){
    return numbber;
  }

  // method to get the journal name
  public String getJournalName(){
    return journal.getJournalName();
  }

  // method to get the volume number
  public int getVolumeNumber(){
    return volume.getVolumeNumber();
  }

  // method to get the collection of Articles
  public OSHashSet getArticles(){
    return articles;
  }

  // method to get the number of Number
  public int getNumbber(){
    return numbber;
  }

  // method to get the year of Article
  public int getArticleYear(){
    int tmpYear = dateOfNumber.getYear();
    if(tmpYear > 60)
      return (tmpYear+1900);
    else
      return(tmpYear+2000);
  }
}