Question

to build a vehicle factory that allows us to abstract a class called Vehicle, create a concrete class called Truck and then a main program that can create Trucks and store them in a garage (ArrayList). We then want to loop through the garage and print out all the stored trucks.

A) Create a Truck class and provide concrete details in Truck about trucks.

B) Create a main program class called MainProgram

C) Create 10 instances of trucks that will be stored in the ArrayList

D) Loop through your ArrayList and print out all the truck details to the screen.

Answer 1

import java.util.ArrayList;
abstract class Vehicle
{
  
private String manufacturerName;
private int year;
private String owner;
  
public Vehicle(String manufacturerName,int year,String owner)
{
   this.manufacturerName = manufacturerName;
   this.year = year;
   this.owner = owner;
}
  
public String getManufacturerName()
{
return manufacturerName;
}
public String getOwner()
{
return owner;
}
  
public void setManufacturerName(String manufacturerName)
{
this.manufacturerName = manufacturerName;
}
public void setOwner(String owner)
{
this.owner = owner;
}
public void setYear(int year)
{
this.year = year;
}
public int getYear()
{
return year;
}

public Vehicle()
{
manufacturerName = "Ford";
year = 2000;
}
public void printMe()
{
System.out.print("Manufacturer = "+manufacturerName +" Year = "+year+" Owner's Name = "+ owner);
}
  
}
class Truck extends Vehicle
{
private int MPG;
  
public Truck()
{
super();
}
public Truck(String manufacturerName,int year,String owner,int MPG)
{
   super(manufacturerName,year,owner);
   this.MPG = MPG;
}
//set and get methods
public int getMPG()
{
return MPG;
}
public void setMPG(int MPG)
{
this.MPG = MPG;
}
  
public void printMe()
{
super.printMe();
System.out.print(" MPG : "+MPG);
System.out.println();
}
  
  
}
class Test
{
public static void main (String[] args)
{
ArrayList<Truck> trucks = new ArrayList<Truck>();

Truck T1 = new Truck("Honda",2009,"James Gosling",12);
trucks.add(T1);

Truck T2 = new Truck("Ford",2012,"Smith Jones ",11);
trucks.add(T2);

Truck T3 = new Truck("Tata",2019,"Adam Hawkings",9);
trucks.add(T3);


Truck T4 = new Truck("Honda",2009,"Bob Rich",12);
trucks.add(T4);

Truck T5 = new Truck("Honda",2005,"David Johnson",11);
trucks.add(T5);

Truck T6 = new Truck("Heno",2016,"Joy Wilkinson",9);
trucks.add(T6);

Truck T7 = new Truck("Volvo Group",2014,"Kevin Smith",12);
trucks.add(T7);

Truck T8 = new Truck("PACCAR",2010,"Mike",11);
trucks.add(T8);

Truck T9 = new Truck("Honda",2017,"Oliver",9);
trucks.add(T9);

Truck T10 = new Truck("Tata Motors",2009,"Ron",9);
trucks.add(T10);


for(int i = 0; i < trucks.size(); i++)
           trucks.get(i).printMe();
          
          
          
}
}

Output:

Manufacturer = Honda Year = 2009 Owner's Name = James Gosling  MPG : 12
Manufacturer = Ford Year = 2012 Owner's Name = Smith Jones   MPG : 11
Manufacturer = Tata Year = 2019 Owner's Name = Adam Hawkings  MPG : 9
Manufacturer = Honda Year = 2009 Owner's Name = Bob Rich  MPG : 12
Manufacturer = Honda Year = 2005 Owner's Name = David Johnson  MPG : 11
Manufacturer = Heno Year = 2016 Owner's Name = Joy Wilkinson  MPG : 9
Manufacturer = Volvo Group Year = 2014 Owner's Name = Kevin Smith  MPG : 12
Manufacturer = PACCAR Year = 2010 Owner's Name = Mike  MPG : 11
Manufacturer = Honda Year = 2017 Owner's Name = Oliver  MPG : 9
Manufacturer = Tata Motors Year = 2009 Owner's Name = Ron  MPG : 9

Do ask if any doubt. Please up-vote.