public class Motorsykkel {
    private int kmStand, prodNummer;
    private String regNr;
    private static int teller = 1;

    public Motorsykkel(String regNr) {
        this.regNr = regNr;
        this.kmStand = 0;
        this.prodNummer = teller++;
    }
    public int hentProdNr() {
        return this.prodNummer;
    } 
    public int hentKmStand() {
        return this.kmStand;
    }
    public void kjoer(int antallKm) {
        this.kmStand += antallKm;
    }
}