Hack 1

public class Hack1 {
    public static void main(String[] args) {
        int cars = 0; // starting number of cars
        int numCarsEntering = 2; // number of cars entering at a time
        int numIterations = 5; // number of times to loop
        for (int i = 0; i < numIterations; i++) {
            cars += numCarsEntering; // use compound operator to add cars
            System.out.println("Number of cars on highway: " + cars);
        }
        //print times 4
        System.out.println(cars * 4);
    }
}
Hack1.main(null);

Number of cars on highway: 2
Number of cars on highway: 4
Number of cars on highway: 6
Number of cars on highway: 8
Number of cars on highway: 10
40

Hack 2

public class Car {
    private String name;
    private int year;
    private double price;
    private boolean isUsed;
    private String make;
    private String model;
    private int budget = 20000;
    public Car(String make, int year, String model, double price, boolean isUsed) {
        //this.name = name;
        this.year = year;
        this.price = price;
        this.isUsed = isUsed;
        this.model = model;
        this.make = make;
    }
    public String getName() {
        return name;
    }
    public double getPrice() {
        return price;
    }
    public int getYear() {
        return year;
    }
    public boolean getIsUsed() {
        return isUsed;
    }
    public String getMake() {
        return make;
    }
    public String getModel() {
        return model;
    }

    public boolean isAffordable(){
        if (price <= budget) {
            return true;
        } else {
            return false;
        }
    }
    public void printCarDetails() {
        System.out.println("Make = " + this.getMake() + ", Model = " + this.getModel() + ", Year = " + this.getYear() + ", " + "Price = " + this.getPrice() + " Used car? " + this.getIsUsed());
    }
    public static void main(String[] args) {
        Car[] listOfCars = new Car[3];

        Car Toyota = new Car("Toyota", 2022, "Corolla", 24999.99, false);
        Car Honda = new Car("Honda", 2018, "Accord", 18999.99, true);
        Car Ford = new Car("Ford", 2020, "Mustang", 34999.99, true);

        listOfCars[0] = Toyota;
        listOfCars[1] = Honda;
        listOfCars[2] = Ford;
    for (int i = 0; i < listOfCars.length; i++)
    {
        listOfCars[i].printCarDetails();
    }

        //System.out.println("The cheaper car is: " + cheaperCarName);
    }
}
Car.main(null);

Make = Toyota, Model = Corolla, Year = 2022, Price = 24999.99 Used car? false
Make = Honda, Model = Accord, Year = 2018, Price = 18999.99 Used car? true
Make = Ford, Model = Mustang, Year = 2020, Price = 34999.99 Used car? true

Hack 3

public static void main(String[] args) {
    Car[] listOfCars = new Car[1];

    Car Toyota2 = new Car("Toyota", 2019, "Camry", 25000.0, false);
    

    listOfCars[0] = Toyota2;

for (int i = 0; i < listOfCars.length; i++)
{
    listOfCars[i].printCarDetails();
}

//isAfordable method defined in Hack 2 Code
System.out.println("This car is within the budget of 20000: " + Toyota2.isAffordable());

if (Toyota2.getPrice() > 50000) {
    System.out.println("This car is a luxury car");
}
else if (Toyota2.getPrice() > 30000) {
    System.out.println("This car is a mid-range car");
}
else {
    System.out.println("This car is an affordable car");
}
}
main(null);

Make = Toyota, Model = Camry, Year = 2019, Price = 25000.0 Used car? false
This car is within the budget of 20000: false
This car is an affordable car

Hack 4

import java.util.Scanner;

public class Car2 {
    private String make;
    private String model;

    public Car2(String make, String model) {
        this.make = make;
        this.model = model;
    }

    public void displayCarInfo() {
        System.out.println("Make: " + make);
        System.out.println("Model: " + model);
    }

    public static void main(String[] args) {
    try {
        Scanner myObj = new Scanner(System.in);  
        System.out.print("Enter number of cars you own: ");
        int numCars = myObj.nextInt(); 
        System.out.println(numCars);
        myObj.nextLine();
        Car2[] listOfCars2 = new Car2[numCars];

        while (numCars > 0) {
            for (int i = 0; i < numCars; i++){
                System.out.print("Enter make of car for car" + (i+1) + ": ");
                String carMake = myObj.nextLine(); 
                System.out.println(carMake);

                System.out.print("Enter model of car for car" + (i + 1) + ": ");
                String carModel = myObj.nextLine(); 
                System.out.println(carModel + "\n");

                Car2 car = new Car2(carMake, carModel);
                listOfCars2[i] = car;
            }
            break;
        }

        for (int i = 0; i < listOfCars2.length; i++)
        {
            System.out.println("Car " + (i+1) + ": ");
            listOfCars2[i].displayCarInfo();
            System.out.println("\n");
        }
    } catch (InputMismatchException e1) {
        System.out.println("Error in input type!");
    } 
    }
}

Car2.main(null);

Enter number of cars you own: 2
Enter make of car for car1: Toyota
Enter model of car for car1: Camry

Enter make of car for car2: Ford
Enter model of car for car2: Mustang

Car 1: 
Make: Toyota
Model: Camry


Car 2: 
Make: Ford
Model: Mustang