import java.util.ArrayList;

public abstract class Student extends Person {
  protected ArrayList<Emne> emner;

  public Student(String navn, int alder) {
    super(navn, alder);
    emner = new ArrayList<Emne>();
  }
  public abstract void registrer(Emne emne);

  @Override
  public String toString() {
    return super.toString() + " tar " + emner;
  }


}