Question

Java

Create a program for a car dealer to use where you have a class for Salesman, Cars, and the Records of sale. 4 salesman and 4 cars to start with but have array size for 50 cars, have space for 100 records in array. The program should have 6 options in the menu. buy car, sell car, show inventory, show salesman, show sales records, and exit.

Salesman class - Name, ID number, Commision rate, Total commisions earned, Totals number of sales

Car class - Year, make, model, vin, color, buying price, and selling price

Record class - Car, Salesman, dealer profit, and date

This program is meant to be a way for a car dealer to track their sales

MENU DETAILS

Buy Car:
Should obtain all information from the user on a car that was purchased by the dealer and store it in a record. Create a new object for the Car that was purchased . Create a new Record. Update the Car and Record arrays accordingly.

Sell Car:
The user should only be able to sell a car that is in the inventory. You may want to show a numbered list of cars in the inventory and let the user choose from the list. Let the user choose a salesman in the same way. Update the Salesmen object that sold the car and update the record array for the sale.

Show Inventory:
Use a for loop and a display() method to show all of the cars and their data. Display the total number of cars and their net worth at the end of the report.

Show Salesmen
Show all stats for each salesman at the dealership. At the end of the report rank the salesmen in order based on highest commissions.

Show Sales Records
Show all records for cars that have been bought and sold. Show the total number of cars purchased, total number of cars sold and total net profit of the dealer.

Exit
Offers a confirmation message and then kills the program if the user agrees.

Answer 1

package vehicle;

public class Salesmen implements Comparable<Salesmen>{

//private members
private String name;
private int id;
private double commissionRate;
private double totalCommission;
private int totalSales;
//Default Constructor
public Salesmen() {
}
//Argument constructor
public Salesmen(String name, int id, double commissionRate, double totalCommission, int totalSales) {
super();
this.name = name;
this.id = id;
this.commissionRate = commissionRate;
this.totalCommission = totalCommission;
this.totalSales = totalSales;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public double getCommissionRate() {
return commissionRate;
}
public void setCommissionRate(double commissionRate) {
this.commissionRate = commissionRate;
}
public double getTotalCommission() {
return totalCommission;
}
public void setTotalCommission(double totalCommission) {
this.totalCommission = totalCommission;
}
public int getTotalSales() {
return totalSales;
}
public void setTotalSales(int totalSales) {
this.totalSales = totalSales;
}

public void display() {
System.out.println( "Salesmen \n name=" + name + ", id=" + id + ", commissionRate=" + commissionRate + ", totalCommission="
+ totalCommission + ", totalSales=" + totalSales);
}
@Override
public int compareTo(Salesmen o) {
  
return (int) (o.getTotalCommission()-this.getTotalCommission());
}
  
}

package vehicle;

public class Car {

private int year;
private String model;
private String vin;
private String color;
private double buyingPrice;
private double sellingPrice;
//Default Constructor
public Car() {
  
}
//Argument constructor
public Car(int year, String model, String vin, String color, double buyingPrice, double sellingPrice) {
super();
this.year = year;
this.model = model;
this.vin = vin;
this.color = color;
this.buyingPrice = buyingPrice;
this.sellingPrice = sellingPrice;
}
public int getYear() {
return year;
}
public void setYear(int year) {
this.year = year;
}
public String getModel() {
return model;
}
public void setModel(String model) {
this.model = model;
}
public String getVin() {
return vin;
}
public void setVin(String vin) {
this.vin = vin;
}
public String getColor() {
return color;
}
public void setColor(String color) {
this.color = color;
}
  
public double getBuyingPrice() {
return buyingPrice;
}
public void setBuyingPrice(double buyingPrice) {
this.buyingPrice = buyingPrice;
}
public double getSellingPrice() {
return sellingPrice;
}
public void setSellingPrice(double sellingPrice) {
this.sellingPrice = sellingPrice;
}
public void display() {
System.out.println( "Car \n year=" + year + ", model=" + model + ", vin=" + vin + ", color=" + color + ", buyingPrice="
+ buyingPrice + ", sellingPrice=" + sellingPrice+"\n");
}
  
}

package vehicle;

import java.util.Date;

public class Record {

private Car car;
private Salesmen salesman;
private String dealer; //A new Class can be created for dealer
private double profit;
private Date date;
public Record() {
  
}
public Record(Car car, Salesmen salesman, String dealer, double profit, Date date) {
  
this.car = car;
this.salesman = salesman;
this.dealer = dealer;
this.profit = profit;
this.date = date;
}
public Car getCar() {
return car;
}
public void setCar(Car car) {
this.car = car;
}
public Salesmen getSalesman() {
return salesman;
}
public void setSalesman(Salesmen salesman) {
this.salesman = salesman;
}
public String getDealer() {
return dealer;
}
public void setDealer(String dealer) {
this.dealer = dealer;
}
public double getProfit() {
return profit;
}
public void setProfit(double profit) {
this.profit = profit;
}
public Date getDate() {
return date;
}
public void setDate(Date date) {
this.date = date;
}
  
public void display() {
car.display();
salesman.display();
  
System.out.println("dealer=" + dealer + ", profit=" + profit + ", date="
+ date);
}
  
}

package vehicle;

import java.util.Arrays;
import java.util.Date;
import java.util.Scanner;

public class VehicleTest {
static Salesmen[] salesMan = new Salesmen[3];
static Car[] cars = new Car[50];
static Record[] records = new Record[100];

public static void main(String[] args) {
showMenu();
// initialize array
salesMan[0] = new Salesmen("XYZ", 123, 200, 0, 0);
salesMan[1] = new Salesmen("abc", 456, 300, 0, 0);
salesMan[2] = new Salesmen("pqr", 789, 400, 0, 0);

// Create 4 Cars
Car car1 = new Car(2018, "aaaaa", "11111", "Black", 2500000, 2900000);
Car car2 = new Car(2017, "bbbbb", "22222", "Grey", 2000000, 2500000);
Car car3 = new Car(2016, "ccccc", "33333", "Red", 3000000, 3900000);
Car car4 = new Car(2018, "ddddd", "44444", "White", 4500000, 4900000);
// Add cars to array
cars[0] = car1;
cars[1] = car2;
cars[2] = car3;
cars[3] = car4;

// Create 4 Records
Record record1 = new Record(car1, salesMan[0], "Dealer 1", 400000, new Date());
Record record2 = new Record(car2, salesMan[1], "Dealer 2", 500000, new Date());
Record record3 = new Record(car3, salesMan[2], "Dealer 3", 900000, new Date());
Record record4 = new Record(car4, salesMan[3], "Dealer 4", 400000, new Date());

records[0]=record1;
records[1]=record2;
records[2]=record3;
records[3]=record4;
}

private static void showMenu() {
Scanner scnr = new Scanner(System.in);
while (true) {
System.out.println(
"MENU \n" + " Press 1 - Buy Car" + "\n" + " Press 2 - sell Car" + "\n" + " Press 3 - Show Inventory"
+ "\n" + " Press 4 - Show salesmen" + "\n" + " Press 5 - Show sales records" + "\n"
+ " Press 6 - Exit the program" + "\n" + "Choose an option");

int option = scnr.nextInt();
switch (option) {
case 1:
buyCar();
break;

case 2:
sellCar();
break;

case 3:
showInventory();
break;

case 4:
showSalesMan();
break;

case 5:
showSalesRecord();
break;
case 6:
// ask for confirmation
System.out.println("Do you really want to exit (Y or N) \n");
Scanner sc = new Scanner(System.in);
String choice = sc.next();
if (choice.equalsIgnoreCase("Y")) {
System.exit(0);
} else if (choice.equalsIgnoreCase("N")) {
// Call menu again
showMenu();
}
break;
}
}

}

static void buyCar() {
System.out.println("Please enter Car Details : ");
Scanner sc = new Scanner(System.in);
System.out.println("year");
int year = sc.nextInt();
System.out.println("model");
String model = sc.nextLine();
System.out.println("vin");
String vin = sc.nextLine();
System.out.println("color");
String color = sc.nextLine();
System.out.println("buyingPrice");
double buyingPrice = sc.nextDouble();

// Create a new Car object
Car car = new Car(year, model, vin, color, buyingPrice, 0);
System.out.println("Please enter Dealer Name : ");
String dealer = sc.nextLine();
// Create a Record
Record record = new Record(car, null, dealer, 0, new Date());

// Add these details to array
for (int i = 0; i < cars.length; i++) {
if (cars[i] == null)
cars[i] = car;
}

for (int i = 0; i < records.length; i++) {
if (records[i] == null)
records[i] = record;
}
}

static void sellCar() {
System.out.println("Please enter Car Details : ");
Scanner sc = new Scanner(System.in);
System.out.println("year");
int year = sc.nextInt();
System.out.println("model");
String model = sc.nextLine();
System.out.println("vin");
String vin = sc.nextLine();
System.out.println("color");
String color = sc.nextLine();

System.out.println("sellingPrice");
double sellingPrice = sc.nextDouble();
// Create a new Car object
Car car = new Car(year, model, vin, color, 0, sellingPrice);
System.out.println("Please enter SalesMan Id Who Made the sale : ");
int salesManID = sc.nextInt();
// find out sales man and update the details
Salesmen s = new Salesmen();
for (int i = 0; i < salesMan.length; i++) {
if (salesMan[i].getId() == salesManID) {
s = salesMan[i];
s.setTotalSales(s.getTotalSales()+1);
}
}
// Create a Record
Record record = new Record(car, s, null, car.getSellingPrice() - car.getBuyingPrice(), new Date());

// Car is sold remove it from cars array
// Find car based on vin
for (int i = 0; i < cars.length; i++) {
if (cars[i].getVin().equalsIgnoreCase(car.getVin()))
cars[i] = null;
}

// Add record to array
for (int i = 0; i < records.length; i++) {
if (records[i] == null)
records[i] = record;
}
}

static void showInventory() {
int totalNumberOfCars = 0;
double totalWorth = 0;
for (int i = 0; i < cars.length; i++) {
totalNumberOfCars++;
totalWorth += cars[i].getSellingPrice();
cars[i].display();
}
System.out.println("Total Number of Cars : " + totalNumberOfCars);
System.out.println("Total Net Worth : " + totalWorth);
}

static void showSalesMan() {
for (int i = 0; i < salesMan.length; i++) {
if(salesMan[i]!=null)
{
salesMan[i].display();  
}
}
//Sort the data based on commission , for this we need to
Arrays.sort(salesMan);
  
System.out.println("Sorted Data : ");
for (int i = 0; i < salesMan.length; i++) {
if(salesMan[i]!=null)
{
salesMan[i].display();  
}
}
}
  
static void showSalesRecord()
{
int totalCarsPurchased=0;
int totalCarsSold=0;
double netProfit=0;
//Purchase when buy rate is availebale
//Sell when sell rate is available
for (int i = 0; i < records.length; i++) {
if(records[i]!=null)
{
records[i].display();  
netProfit+=records[i].getProfit();
  
}
}
}
}

//If there are any small mistakes due to time constraints please ignore those. Please co-operate.

Thanks ?