Assignment 1: Dashboard

package project;

import java.util.Scanner;


public class Dashboard {

    private int odometer;
    private int speedometer;
    private boolean checkEngine;

    public Dashboard() {
        odometer = 0;
        speedometer = 0;
        checkEngine = false;
    }

    public Dashboard(int milesTravelled, int speed) {
        if (milesTravelled >= 0 && milesTravelled <= 99999) {
            odometer = milesTravelled;
        }
        else {
            odometer = 0;
            checkEngine = true;
        }

        if (speed >= 0 && speed <= 100) {
            speedometer = speed;
        }
        else {
            speedometer = 0;
            checkEngine = true;
        }
    }

    public void accelerate() {
        speedometer++;
        if (speedometer > 100) {
            speedometer = 0;
            checkEngine = true;
        }
    }

    public void drive(int numMinutes) {
        if ((((double)numMinutes / 60) * speedometer) + odometer > 99999) {
            odometer = 0;
            checkEngine = true;
        }
        else {
            odometer += (((double)numMinutes / 60) * speedometer);
        }
    }

    public String toString() {
        String print = "";
        print += "Speedometer: " + speedometer + " MPH";

        print += "\nOdometer: ";

        for (int i = 4; i >= 0 ; i--) {
            if (odometer < (Math.pow(10, i))) {
                print += "0";
            } else {
                print += odometer;
                break;
            }
        }

        if (checkEngine) {
            print += "\nCheck Engine: On";
        } else {
            print += "\nCheck Engine: Off";
        }

        return print;
    }

    public static void main(String[] args) {
        Dashboard dashboard1 = new Dashboard();
        System.out.println("DASHBOARD 1 **************************");
        System.out.println(dashboard1 + "\n");

        Dashboard dashboard2 = new Dashboard(15000, 99);
        System.out.println("DASHBOARD 2 **************************");
        System.out.println(dashboard2 + "\n");
        dashboard2.accelerate();
        System.out.println(dashboard2 + "\n");
        dashboard2.accelerate();
        System.out.println(dashboard2 + "\n");

        Dashboard dashboard3 = new Dashboard(100000, 45);
        System.out.println("DASHBOARD 3 **************************");
        System.out.println(dashboard3 + "\n");

        Dashboard dashboard4 = new Dashboard(-1, 45);
        System.out.println("DASHBOARD 4 **************************");
        System.out.println(dashboard4 + "\n");

        Dashboard dashboard5 = new Dashboard(2500, 101);
        System.out.println("DASHBOARD 5 **************************");
        System.out.println(dashboard5 + "\n");

        Dashboard dashboard6 = new Dashboard(300, -10);
        System.out.println("DASHBOARD 6 **************************");
        System.out.println(dashboard6 + "\n");

        Dashboard dashboard7 = new Dashboard(0, 60);
        System.out.println("DASHBOARD 7 **************************");
        System.out.println(dashboard7 + "\n");
        dashboard7.drive(20);
        System.out.println(dashboard7 + "\n");

        Dashboard dashboard8 = new Dashboard(99999, 60);
        System.out.println("DASHBOARD 8 **************************");
        System.out.println(dashboard8 + "\n");
        dashboard8.drive(1);
        System.out.println(dashboard8 + "\n");

    }

}