Question

• An object Car can be described by the manufacturer (Honda, Toyota and Nissan), its price, and its quantity. These attributes are not accessible by other classes. The class contains a parameterized constructor that sets the attributes using mutator methods. The accessibility of the mutator methods are local to the class. It also has accessor methods that return the respective value of the attributes. The accessor method for getManufacturer() will return the code of the car (H, T or N) instead of “Honda”, “Toyota” and “Nissan”.   Include a method calcTotalPrice() that returns the total price of the cars after the discount, and a displayInfo () method that returns the information about the car such as the manufacturer, price for each car, quantity, and total price after the discount.

Your TASK

Part 1

Write the class Car . Save the file as Car.java.

Part 2

Create a client class ClientCar and save as ClientCar.java.

In the client class, do the following: -

You are required to declare 2 different Cars. Get the input for for manufacturer, the quantity and price. Display the information for each car, such as the manufacturer, price for each car, quantity, and total price after the discount.

     Discount: -

Total Price > 300 000 : Discount 20%

Total Price > 50000 – Discount 10%

Answer 1

Code

Car.java

public class Car {
   private String manufacturer;
   private int quantity;
   private double price;
   /**
   * @param manufacturer
   * @param quantity
   * @param price
   */
   public Car(String manufacturer, int quantity, double price) {
       super();
       this.manufacturer = manufacturer;
       this.quantity = quantity;
       this.price = price;
   }
   /**
   * @return the manufacturer
   */
   public String getManufacturer() {
       return manufacturer.charAt(0)+"";
   }
   /**
   * @return the quantity
   */
   public int getQuantity() {
       return quantity;
   }
   /**
   * @return the price
   */
   public double getPrice() {
       return price;
   }
   /**
   * @param manufacturer the manufacturer to set
   */
   private void setManufacturer(String manufacturer) {
       this.manufacturer = manufacturer;
   }
   /**
   * @param quantity the quantity to set
   */
   private void setQuantity(int quantity) {
       this.quantity = quantity;
   }
   /**
   * @param price the price to set
   */
   private void setPrice(double price) {
       this.price = price;
   }
  
   public double calcTotalPrice()
   {
       double totalCost=quantity*price;
       if(totalCost>300000 )
           totalCost-=totalCost*0.2;
       else if(totalCost>50000 )
           totalCost-=totalCost*0.1;
       return totalCost;
   }
  
   public String displayInfo ()
   {
       return "Manufacturer: "+manufacturer+"\nQuantity: "+quantity+"\nPrice: "+price+"\nTotal price: "+calcTotalPrice();
   }
}

CarClient.java

import java.util.Scanner;

public class ClientCar {

   public static void main(String[] args) {
       Scanner scnr=new Scanner(System.in);
       String manu;
       int qnty;
       double price;
       System.out.print("Enter the car manufacturer: ");
       manu=scnr.next();
       System.out.print("Enter the car quantity: ");
       qnty=scnr.nextInt();
       System.out.print("Enter the price: ");
       price=scnr.nextDouble();
       Car car1=new Car(manu, qnty, price);
       System.out.print("Enter the car manufacturer: ");
       manu=scnr.next();
       System.out.print("Enter the car quantity: ");
       qnty=scnr.nextInt();
       System.out.print("Enter the price: ");
       price=scnr.nextDouble();
       Car car2=new Car(manu, qnty, price);
      
       System.out.println(car1.displayInfo());
       System.out.println();
       System.out.println(car1.displayInfo());
       System.out.println();
   }

}

output

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