FamilyTariff.java

public class FamilyTariff implements TaxiTarrif {

    @Override
    public long calculatePrice(TaxiRide ride){
        return 50+20*ride.getDistance()/ride.getPassengers();
    }

    }

StandartTarrif.java

public class StandartTariff implements TaxiTarrif {


    @Override
    public long calculatePrice(TaxiRide ride) {
        return 30+5*ride.getDistance()+2*ride.getDuration();
    }

    }

TaxiRide.java

public class TaxiRide {

    private int passengers;
    private long distance;
    private long duration;
    private TaxiTarrif tarrif;


    public TaxiRide(){
    }
    public TaxiRide(long duration,long distance,TaxiTarrif taxiTarrif){
        passengers = 1;
        check(distance);
        this.duration=duration;
        check(distance);
        this.distance = distance;
        tarrif = taxiTarrif;


    }



    public TaxiRide(int passengers,long distance, long duration,TaxiTarrif taxiTarrif){
        check(passengers);
        this.passengers=passengers;
        check(distance);
        this.distance=distance;
        check(duration);
        this.duration=duration;
        tarrif = taxiTarrif;

    }

    public int getPassengers() {
        return passengers;
    }

    public long getDistance() {
        return distance;
    }

    public long getDuration() {
        return duration;
    }
    public long getPrice(){
        return tarrif.calculatePrice(this);
    }

    public String toString(){
        return "Ride \nduration:" +this.duration + " min\ndistance: " + this.distance + " km\n" + "price: " + getPrice()+"$ \n";
    }
    private void check(int passengers){
        if(passengers<0){
            throw new IllegalArgumentException("This value can't be less or equal 0!");
        }
    }
    private void check(long value){
        if(value<0){
            throw new IllegalArgumentException("This value can't be less or equal 0!");
        }
    }

}

TaxiRides.java

public class TaxiRide {

    private int passengers;
    private long distance;
    private long duration;
    private TaxiTarrif tarrif;


    public TaxiRide(){
    }
    public TaxiRide(long duration,long distance,TaxiTarrif taxiTarrif){
        passengers = 1;
        check(distance);
        this.duration=duration;
        check(distance);
        this.distance = distance;
        tarrif = taxiTarrif;


    }



    public TaxiRide(int passengers,long distance, long duration,TaxiTarrif taxiTarrif){
        check(passengers);
        this.passengers=passengers;
        check(distance);
        this.distance=distance;
        check(duration);
        this.duration=duration;
        tarrif = taxiTarrif;

    }

    public int getPassengers() {
        return passengers;
    }

    public long getDistance() {
        return distance;
    }

    public long getDuration() {
        return duration;
    }
    public long getPrice(){
        return tarrif.calculatePrice(this);
    }

    public String toString(){
        return "Ride \nduration:" +this.duration + " min\ndistance: " + this.distance + " km\n" + "price: " + getPrice()+"$ \n";
    }
    private void check(int passengers){
        if(passengers<0){
            throw new IllegalArgumentException("This value can't be less or equal 0!");
        }
    }
    private void check(long value){
        if(value<0){
            throw new IllegalArgumentException("This value can't be less or equal 0!");
        }
    }

}

TaxiRidesRunner.java

public class TaxiRidesRunner {
    public static void main(String[] args) {
        TaxiTarrif tarrif = new StandartTariff();
        TaxiTarrif tarrif1 = new FamilyTariff();
        TaxiRide taxiRide1 = new TaxiRide(5,3,4,tarrif);
        TaxiRide taxiRide2 = new TaxiRide(8,5,1,tarrif1);
        TaxiRide taxiRide3 = new TaxiRide(1,8,40,tarrif1);

        TaxiRides rides = new TaxiRides();
        rides.add(taxiRide1);
        rides.add(taxiRide2);
        rides.add(taxiRide3);


        rides.printRides();
        System.out.println("During the day, I earned " + rides.getPrice() + "$");
        //System.out.println(taxiRide1.toString());
    }
}

TaxiTarrif.java

public interface TaxiTarrif {

    public long calculatePrice(TaxiRide ride);

}