The file Dealership.java contains an incomplete definition for the dealership cl

Question

The file Dealership.java contains an incomplete definition for the dealership class. Save it to your directory and complete the class definition as follows: • Declare the instance data (dealership name, dealership id, and average cost of cars sold) • Add the missing method headers (aka signatures) • Add the missing method bodies import java.text.NumberFormat; import java.util.ArrayList; import java.util.Random; public class Dealership { final int numModels = 5; int [] modelsCount = new int[numModels]; ArrayList carsSold = new ArrayList(); Random gen = new Random(System.currentTimeMillis()); //private variables //Constructor with a name as a parameter /* Sell Car - This method will create a random car object and * add it to the ArrayList using the add method. */ public void sellACar(){ int type = gen.nextInt(numModels);//0 to 5 carsSold.add(new Car(type)); modelsCount[type]++; } //Get the total cost of all the cars by add the cost of each car //Add code here public double getTotalSales(){ double total = 0.0; return total; } //Get the average cost of each car by getting the totalSales //and dividing by the size() of the arrayList carsSold //Add code here //Get the most common model //Add code here //Print all the sold cars public String toStringSoldCars(){ StringBuilder result = new StringBuilder(); for(int i = 0; i < this.carsSold.size(); i++){ result.append(this.carsSold.get(i)); } return result.toString(); } //override toString method //Add code here }

Explanation / Answer

Here is the solution for you. If you need any further refinements, just get back to me.

import java.text.NumberFormat;
import java.util.ArrayList;
import java.util.Random;
public class Dealership
{
final int numModels = 5;
int [] modelsCount = new int[numModels];
ArrayList carsSold = new ArrayList();
Random gen = new Random(System.currentTimeMillis());
//private variables
String dealershipName;
int dealershipID;
double averageCostOfCarsSold;
//Constructor with a name as a parameter
Dealership(String name)
{
dealershipName = name;
}
/* Sell Car - This method will create a random car object and * add it to the ArrayList using the add method. */
public void sellACar()
{
int type = gen.nextInt(numModels);//0 to 5
carsSold.add(new Car(type));
System.out.println("Check: "+carsSold.get(0));
modelsCount[type]++;
}
//Get the total cost of all the cars by add the cost of each car
public double getTotalSales()
{
Car c;
double total = 0.0;
for(int i = 0; i < carsSold.size(); i++)
{
c = (Car)carsSold.get(i);
total += c.getCost();
}
return total;
}
//Get the average cost of each car by getting the totalSales
//and dividing by the size() of the arrayList carsSold
public double getAverageCost()
{
return getTotalSales() / carsSold.size();
}
//Get the most common model
public int getCommonModel()
{
int common = 0;
for(int i = 0; i < numModels; i++)
if(modelsCount[i] > modelsCount[common])
common = i;
return common;
}
//Print all the sold cars
public String toStringSoldCars()
{
StringBuilder result = new StringBuilder();
for(int i = 0; i < this.carsSold.size(); i++)
{
result.append(this.carsSold.get(i));
}
return result.toString();
}
//override toString method
public String toString()
{
return String.format("Dealership Name: "+dealershipName+" Dealership ID: "+dealershipID);
}
//Add code here
}

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