public enum Generator {

    IRONandGOLD(1),
    IRONandGOLDII(2),
    IRONandGOLDandEMERALD(1),
    IRONandGOLDandEMERALDII(2),
    DIAMONDI(1),
    DIAMONDII(2),
    DIAMONDIII(3),
    EMERALDI(1),
    EMERALDII(2),
    EMERALDIII(3),
    RUBYI(1),
    RUBYII(2);

    int speed;

    private Generator(int speed) {
        this.speed = speed;
    }

    public int getSpeed(Generator gen) {
        return speed;
    }

}