class CruiseControl {
    static final int STOP_PRESET = 0;
    static final int PLANETARY_SPEED_PRESET = 1; 
    static final int CRUISE_SPEED_PRESET = 2;

    static final double STOP_SPEED_KMH = 0;
    static final double PLANETARY_SPEED_KMH = 7667; 
    static final double CRUISE_SPEED_KMH = 16944; 

    private double targetSpeedKmh;

    void setPreset(int speedPreset) { 
        if (speedPreset == CRUISE_SPEED_PRESET) {
            setTargetSpeedKmh(CRUISE_SPEED_KMH); 
        } else if (speedPreset == PLANETARY_SPEED_PRESET) {
            setTargetSpeedKmh(PLANETARY_SPEED_KMH);
        } else if (speedPreset == STOP_PRESET) {
            setTargetSpeedKmh(STOP_SPEED_KMH);
        }
    }

    void setTargetSpeedKmh(double speed) { 
        targetSpeedKmh = speed;
    } 
}