import java.util.Scanner;
import java.util.ArrayList;
import java.io.PrintWriter;
import java.io.FileReader;

class Caravan {

    String dest;
    ArrayList<Car> cars = new ArrayList<Car>();
    
    Caravan(String filename) {
        Scanner file = null;
        try {
            file = new Scanner(new FileReader(filename));
        } catch (Exception e) {
            e.printStackTrace();
            System.exit(2);
        }
        this.dest = file.nextLine();
        try {
            while (true) {
                Car c = new Car(file);
                this.cars.add(c);
            }
        } catch (NoCarException e) {
            // this is actually a happy state :)
        }
    }

    Caravan() { 
    }

    void addCar(Car aCar) {
        this.cars.add(aCar);
    }

    void setDest(String dest) {
        this.dest = dest;
    }

    void persist(PrintWriter pw) {
        pw.println(this.dest);
        for (int i=0; i< cars.size(); i++) {
            Car nextCar = cars.get(i);
            nextCar.persist(pw);
        }
        pw.println("Done with cars.");
        pw.flush();
    }

    public String toString() {
        String retval = "";
        retval += "A caravan going to " + this.dest + "\n";
        retval += "Here are my cars: \n";
        for (int i=0; i<this.cars.size(); i++) {
            retval += "  " + (i+1) + ". " + this.cars.get(i) + "\n";
        }
        return retval;
    }
}