@Override
   	public int hashCode() {
   		final int prime = 31;
   		int result = 1;
   		result = prime * result
   				+ ((hausnummer == null) ? 0 : hausnummer.hashCode());
   		result = prime * result + ((land == null) ? 0 : land.hashCode());
   		result = prime * result + ((ort == null) ? 0 : ort.hashCode());
   		result = prime * result + ((plz == null) ? 0 : plz.hashCode());
   		result = prime * result + ((strasse == null) ? 0 : strasse.hashCode());
   		return result;
   	}