Answer to Question #162032 in Java | JSP | JSF for hajma

Question

Create a super class called car.

a. The car class has the following fields and methods.

- Intspeed:

-doubleregularPrice:

- stringcolor: doublegelSale Price()

b. Creote a sub class of car class and name It as pickup. The following fields and methods.

- intweight:

- doublegetSidePrice()

If weight is greater than 2000. 15% discount otherwise 25%

c. Create a sub class and name it as Nissan. The follwing fields and methods.

- Intyear;

-intmanufacturerDiscount:

-doublegetsdePrice()

From the sale price computed from car class. subtract the manufacturer discount

d. Create a sub class and name it is methods

-. Intlength:

-doublegetSalePrice()

If length is less than 20 feet. 10% discount. Otherwise, 15% discount.

e. Create a MyShop class which contains the main method. Perform the following within the main() method.

-Create an instance of Toyota class and initialize all the fields with appropriate values. Use super (...)method in the constructor for initializing the fields of the super class.

-Create two instances of the Nissan class and initialize all the fields with appropriate values. Use super(...) method in the constructor for initializing the fields of the super class.

-Create an instance of car class and initialize all the fields with appropriate values. Display the sale prices of all instance.

Answer 1

MyShop.java file
/**
 * Create a MyShop class which contains the main method. 
 * Perform the following within the main() method.
 */
public class MyShop {
	/**
	 * The start point of the program
	 * @param args
	 */
	public static void main(String[] args) {
		//-Create an instance of Toyota class and initialize all the fields with appropriate values. 
		//Use super (...)method in the constructor for initializing the fields of the super class.
		Toyota toyota =new Toyota(200, 40000, "Red", 15);
		//-Create two instances of the Nissan class and initialize all the fields with appropriate values. 
		//Use super(...) method in the constructor for initializing the fields of the super class.
		Nissan nissan=new Nissan(250, 60000, "Black",2015, 5);
		Pickup pickup =new Pickup(180, 55000, "Yellow", 1500);
		//-Create an instance of car class and initialize all the fields with appropriate values.
		Car car =new Car(250, 35000, "Blue");
		//Display the sale prices of all instance.
		System.out.println(toyota.toString());
		System.out.println("The sale price: $"+toyota.getSalePrice()+"\n\n");
		System.out.println(nissan.toString());
		System.out.println("The sale price: $"+nissan.getSalePrice()+"\n\n");
		System.out.println(pickup.toString());
		System.out.println("The sale price: $"+pickup.getSalePrice()+"\n\n");
		System.out.println(toyota.toString());
		System.out.println("The sale price: $"+toyota.getSalePrice()+"\n\n");
		System.out.println("Csar\n"+car.toString());
		System.out.println("The sale price: $"+car.getSalePrice()+"\n\n");
	}
}


Car.java file

public class Car {
	//The car class has the following fields and methods.
	private int speed;
	private double regularPrice;
	private String color;
	/**
	 * Constructor
	 * @param speed
	 * @param regularPrice
	 * @param color
	 */
	public Car(int speed, double regularPrice, String color) {
		this.speed=speed;
		this.regularPrice=regularPrice;
		this.color=color;
	}
	/**
	 * Get regular price
	 * @return
	 */
	public double getSalePrice() {
		return regularPrice;
	}
	/***
	 * Returns information
	 */
	public String toString() {
		return "Speed: "+speed+
			    "\nRegular price: $"+regularPrice+
			    "\nColor: "+color; 
	}
}


Pickup.java file

public class Pickup extends Car{
	private int weight;
	/**
	 * Constructor
	 * @param speed
	 * @param regularPrice
	 * @param color
	 * @param weight
	 */
	public Pickup(int speed, double regularPrice, String color,int weight) {
		super(speed, regularPrice, color);
		this.weight=weight;
	}
	/**
	 * If weight is greater than 2000. 15% discount otherwise 25%
	 */
	@Override
	public double getSalePrice() {
		double salePrice=super.getSalePrice();
		if(weight>2000) {
			return salePrice-salePrice*0.15;
		}
		return salePrice-salePrice*0.25;
	}	
	/***
	 * Returns information
	 */
	public String toString() {
		return "Pickup\n"+super.toString()+"\nWeight: "+weight; 
	}
}

Nissan.java file

public class Nissan extends Car{
	private int year;
	private int manufacturerDiscount;
	/**
	 * Constructor
	 * @param speed
	 * @param regularPrice
	 * @param color
	 * @param weight
	 */
	public Nissan(int speed, double regularPrice, String color,int year,int manufacturerDiscount) {
		super(speed, regularPrice, color);
		this.year=year;
		this.manufacturerDiscount=manufacturerDiscount;
	}
	/**
	 * From the sale price computed from car class subtract the manufacturer discount
	 * @return
	 */
	@Override
	public double getSalePrice() {
		return super.getSalePrice()-(super.getSalePrice()*((double)manufacturerDiscount/100.0));
	}
	/***
	 * Returns information
	 */
	public String toString() {
		return "Nissan\n"+super.toString()+"\nYear: "+year+"\nManufacturer discount: "+manufacturerDiscount+"%"; 
	}
}

Toyota.java file

public class Toyota extends Car{
	private int length;
	/**
	 * Constructor
	 * @param speed
	 * @param regularPrice
	 * @param color
	 * @param weight
	 */
	public Toyota(int speed, double regularPrice, String color,int length) {
		super(speed, regularPrice, color);
		this.length=length;
	}
	/**
	 * 	If length is less than 20 feet. 10% discount. Otherwise, 15% discount.
	 */
	@Override
	public double getSalePrice() {
		double salePrice=super.getSalePrice();
		if(length<20) {
			return salePrice-salePrice*0.1;
		}
		return salePrice-salePrice*0.15;
	}
	/***
	 * Returns information
	 */
	public String toString() {
		return "Toyota\n"+super.toString()+"\nLength: "+length+ " feet"; 
	}
}

Output

Toyota
Speed: 200
Regular price: $40000.0
Color: Red
Length: 15 feet
The sale price: $36000.0




Nissan
Speed: 250
Regular price: $60000.0
Color: Black
Year: 2015
Manufacturer discount: 5%
The sale price: $57000.0




Pickup
Speed: 180
Regular price: $55000.0
Color: Yellow
Weight: 1500
The sale price: $41250.0




Toyota
Speed: 200
Regular price: $40000.0
Color: Red
Length: 15 feet
The sale price: $36000.0




Csar
Speed: 250
Regular price: $35000.0
Color: Blue
The sale price: $35000.0