import java.io.PrintWriter;
import java.io.IOException;
import java.util.Scanner;

class Car {
    int odo;
    String make;
    String model;
    double galsRemaining; // gallons
    double gasMileage;    // mpg
    double sizeOfTank;    // gallons
    int year;             // year of manufacture
    static int numCars;

    // Persist an existing Car object to a file.
    void persist(PrintWriter pw) {
        pw.println(this.make + " " + this.model);
        pw.println(this.galsRemaining);
        pw.println(this.gasMileage);
        pw.println(this.sizeOfTank);
        pw.println(this.year);
        pw.println(this.odo);
        pw.flush();
    }

    // Hydrate a new Car object from the file passed as an argument.
    Car(Scanner s) throws NoCarException {
        String makeModelLine = s.nextLine();
        if (makeModelLine.equals("Done with cars.")) {
            throw new NoCarException();
        }
        String[] mmlparts = makeModelLine.split(" ");
        this.make = mmlparts[0];
        this.model = mmlparts[1];

        this.galsRemaining = Double.parseDouble(s.nextLine());
        this.gasMileage = Double.parseDouble(s.nextLine());
        this.sizeOfTank = Double.parseDouble(s.nextLine());
        this.year = Integer.parseInt(s.nextLine());
        this.odo = Integer.parseInt(s.nextLine());
    }

    Car(String make, String model, int year) {
        this.make = make;
        this.model = model;
        this.year = year;
        this.odo = 0;

        numCars++;

        if (make.equals("Chevy") || make.equals("GM")) {
            this.sizeOfTank = 40;
        } else {
            this.sizeOfTank = 15;
        }
        if (make.equals("Chevy") && model.equals("Malibu")) {
            this.gasMileage = 4;
        } else {
            this.gasMileage = 28;
        }
        this.galsRemaining = this.sizeOfTank / 2;
    }

    public String getMake() {
        return this.make;
    }

    String getModel() {
        return this.model;
    }

    void setGalsRemaining(double newGals) {
        this.galsRemaining = newGals;
    }

    int getYearsOld() {
        return 2025 - this.year;
    }

    void fillUp() {
        this.galsRemaining = this.sizeOfTank;
    }

    double getTankPerc() {
        return this.galsRemaining / this.sizeOfTank * 100;
    }

    void drive(double miles) throws Exception {
        double gallonsUsed = miles / this.gasMileage;
        if (gallonsUsed > this.galsRemaining) {
            throw new Exception("NOT ENOUGH GAS!!!");
        }
        this.odo = this.odo + (int) miles;
        this.galsRemaining = this.galsRemaining - gallonsUsed;
    }
    

    public boolean equals(Car c) {
        if (this.make.equals(c.make) && this.model.equals(c.model)) {
            return true;
        } else {
            return false;
        }
    }

    public String toString() {
        return "a " + this.year + " " + this.make + " " + this.model +
            " with " + this.galsRemaining + " gallons in its tank and " +
            this.odo + " miles on its odometer";
    }

}