abstract class Mitarbeiter{
  int personalNummer;
  String name;
  String vorname;

  public Mitarbeiter(int personalNummer, String name, String vorname) {
    this.personalNummer = personalNummer;
    this.name = name;
    this.vorname = vorname;
  }

  abstract void print();
  void setPersonalNummer(int i){personalNummer=i;}
  void setName(String s){name=s;}
  void setVorname(String s){vorname=s;}

  int getPersonalNummer(){return personalNummer;}
  String getName(){return name;}
  String getVorname(){return vorname;}
}