import COM.odi.util.OSHashSet;
import COM.odi.util.OSVector;

public class Volume{
  // members of Volume Class
  int volNumber;
  Journal journal;
  OSVector numbbers;

  public Volume(int volNmber,Journal j1){
  // constructor  
    volNumber = volNmber;
    journal = j1;
    numbbers = new OSVector();
  }

  public void addNumber(Numbber numbber){
  // method to add the Numbber to the Volume
    if(numbbers.contains(numbber)){
        System.out.println("Number Already Exists  ");
        System.exit(0);
        }
    numbbers.add(numbber);
  }

  // method to get the Volume number
  public int getVolumeNumber(){
    return volNumber;
  }

  // method to get the count of Numbbers in the volume
  public int getNumOfNumbers(){
    return numbbers.size();
  }

  // method to get the name of the Journal
  public String getJournalName(){
    return journal.getJournalName();
  }
  
  // method to get the collection of the Numbbers of the volume
  public OSVector getNumbbers(){
    return numbbers;
  }
}