import java.util.ArrayList;
 public class Dosen extends entitas
 {
   private String NID;
   private ArrayList<Book> buku;
   public Dosen(String Nama, int Umur, String Alamat, String nid)
   {
     super(Nama,Umur,Alamat);
     NID = nid;
     buku = new ArrayList<Book>();
   }
   public void print()
   {
     super.display();
     System.out.println("NID :" +NID);
     for(Book bukuu : buku)
     {
       System.out.println("Buku yang dipinjam :" +bukuu.getJudul());
     }
   }
   public String getDosen()
   {
     return super.getName();
   }
     public void meminjamBuku(Book book)
   {
     buku.add(book);
   }
   public void kembalikanBuku(Book book)
   {
     buku.remove(book);
   }
   public void prnt()
   {
     super.display();
     System.out.println("NID :" +NID);
   }
 }