Units 1-4 Hacks

// Hack 1

public class Hack1 {
    public static void main(String[] args) {
        
        int cars = 7;
        int wheels = cars*4;
        System.out.println("Numbers of wheels on " + cars + " cars" + " is " + wheels + " wheels");

    }
}
Hack1.main(null);

Numbers of wheels on 7 cars is 28 wheels

// Hack 2
public class Car {
    private String make;
    private String model;
    private int year;
    private double price;
    private boolean isUsed;
    
    public Car(String make, String model, int year, double price, boolean isUsed) {
        this.make = make;
        this.model = model;
        this.year = year;
        this.price = price;
        this.isUsed = isUsed;
    }
    
    
   
    public void printCarDetails() {
        System.out.println("Make: " + make);
        System.out.println("Model: " + model);
        System.out.println("Year: " + year);
        System.out.println("Price: $" + price);
        System.out.println("Is used: " + isUsed);
        System.out.println();
    }
    
    public static void main(String[] args) {
        Car[] cars = new Car[3];
        
        cars[0] = new Car("Toyota", "Corolla", 2022, 24999.99, false);
        cars[1] = new Car("Honda", "Accord", 2018, 18999.99, true);
        cars[2] = new Car("Ford", "Mustang", 2020, 34999.99, true);
        
        for (Car car : cars) {
            car.printCarDetails();
        }
    }
}
Car.main(null);

Make: Toyota
Model: Corolla
Year: 2022
Price: $24999.99
Is used: false

Make: Honda
Model: Accord
Year: 2018
Price: $18999.99
Is used: true

Make: Ford
Model: Mustang
Year: 2020
Price: $34999.99
Is used: true

//Hack 3

public class Car {
    private String make;
    private String model;
    private int year;
    private double price;

    public Car(String make, String model, int year, double price) {
        this.make = make;
        this.model = model;
        this.year = year;
        this.price = price;
    }

    public String getMake() {
        return make;
    }

    public String getModel() {
        return model;
    }

    public int getYear() {
        return year;
    }

    public double getPrice() {
        return price;
    }

    public boolean isAffordable(double budget) {
        return price <= budget;
    }

    public static void main(String[] args) {
        Car myCar = new Car("Toyota", "Camry", 2019, 25000.0);
        System.out.println("Make: " + myCar.getMake());
        System.out.println("Model: " + myCar.getModel());
        System.out.println("Year: " + myCar.getYear());
        System.out.println("Price: " + myCar.getPrice());

        if (myCar.isAffordable(20000)) {
            System.out.println("The car is affordable.");
        } else {
            System.out.println("The car is not affordable within a budget of $20000.");
        }

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

Make: Toyota
Model: Camry
Year: 2019
Price: 25000.0
The car is not affordable within a budget of $20000.
The car is an affordable car.

//Hack 4 (do not run it runs forever)

import java.util.Scanner;

public class CarList {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int numCars = 0;

        while (numCars <= 0) {
            try {
                System.out.print("Enter the number of cars you own: ");
                numCars = scanner.nextInt();
                if (numCars <= 0) {
                    System.out.println("Please enter a positive integer.");
                }
            } catch (Exception e) {
                System.out.println("Invalid input. Please enter a positive integer.");
                scanner.next(); // clear scanner buffer
            }
        }

        String[] makes = new String[numCars];
        String[] models = new String[numCars];

        for (int i = 0; i < numCars; i++) {
            System.out.println("Car " + (i + 1) + ":");
            System.out.print("Make: ");
            makes[i] = scanner.next();
            System.out.print("Model: ");
            models[i] = scanner.next();
        }

        System.out.println("Your cars:");
        for (int i = 0; i < numCars; i++) {
            System.out.println((i + 1) + ". " + makes[i] + " " + models[i]);
        }

        scanner.close();
    }
}

// Extra Credit