Question

CS

Using the following UML outline, create the following abstract parent class along with the
4 subclasses and Driver class. Implement the Classes, listed attributes and methods along with any additional things that you may need.

Add a driver class that utilizes the methods/attributes in the classes to output the following based on the vehicle type (therefore, you must create an instance for all 4 subclasses in your driver):

1. Vehicle Type (i.e., Car, Airplane, etc.)
2. Transportation method (wheels, wings, etc.)
3. Whether your vehicle transports passengers or not.
4. Whether your vehicle is a passenger vehicle or Cargo Vehicle
5. Whether your vehicle travels on land, water or air.

Implement the following UML:

UML

Vehicle Class (Abstract)

Attributes:

-vehicleType:String
-passengers:boolean

Behaviors:

+Vehicle(vehicleType:String, passengers:boolean):void
+Abstract travelMethod(vehicleType:String):String
+getPassengers():boolean //returns passengers value
+getVehicleType():String

Child Class1:

Car

Attributes:

-travelMethod:String

Behaviors:

+travelMethod(vehicleType:String):String //Returns travelMethod based on vehicleType
for instance if helicopter, the travelMethod = Blades/Propellers, if car then
travelMethod = wheels, if airplane then wings, etc.

+isVehicle():void. //Outputs vehicle type, transportation method, whether it is a passenger vehicle or cargo vehicle and whether it rolls with wheels, flies with wings or flies with blades, or travels on water.

Child Class2:

Airplane

Attributes:

-travelMethod:String

Behaviors:

+travelMethod(vehicleType:String):String //Returns travelMethod based on vehicleType
for instance if helicopter, the travelMethod = Blades/Propellers, if car then
travelMethod = wheels, if airplane then wings, etc.

+isVehicle():void. //Outputs vehicle type, transportation method, whether it is a passenger vehicle or cargo vehicle and whether it rolls with wheels, flies with wings or flies with blades, or travels on water.

Child Class3:

Helicoptor

Attributes:

-travelMethod:String

Behaviors:

+travelMethod(vehicleType:String):String //Returns travelMethod based on vehicleType
for instance if helicopter, the travelMethod = Blades/Propellers, if car then
travelMethod = wheels, if airplane then wings, etc.

+isVehicle():void. //Outputs vehicle type, transportation method, whether it is a passenger vehicle or cargo vehicle and whether it rolls with wheels, flies with wings or flies with blades, or travels on water.

Child Class4:

Boat

Attributes:

-travelMethod:String

Behaviors:

+travelMethod(vehicleType:String):String //Returns travelMethod based on vehicleType
for instance if helicopter, the travelMethod = Blades/Propellers, if car then
travelMethod = wheels, if airplane then wings, etc.

+isVehicle():void. //Outputs vehicle type, transportation method, whether it is a passenger vehicle or cargo vehicle and whether it rolls with wheels, flies with wings or flies with blades, or travels on water.

Deliverables:

1. Parent Class for Vehicle, 4 child classes and 1 Driver class.

2. Screenshots of output

3. Place your name, class, date and assignment in comments at top of each .java file. (Points off for files with no name)

Answer 1

Code for all 5 classes is given below. Code is explained thoroughly in the code comments.5 Classes are : Vehicle , Car, Helicoptor , Airplane , Boat , Driver . The code runs smoothly. As you have not given the Driver class, i have made it on my own to test the program You can run the program according to your liking by giving different values to vehicles in Driver class objects. I have attached the output screenshot in the last.

If need any further clarification please ask in comments.

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CODE-->>>

Vehicle Class

//Abstract super class Vehicle
abstract class Vehicle
{
        //private data members
        private String vehicleType;
        private boolean passengers;
        //public constructor
        public Vehicle(String vehicleType, boolean passengers) {
                this.vehicleType = vehicleType;
                this.passengers = passengers;
        }
        //abstract method
        abstract String  travelMethod(String vehicleType);
        //Accessor functions
        public String getVehicleType() {
                return vehicleType;
        }

        public boolean isPassengers() {
                return passengers;
        }
        
}

Car class

//child class Car
class Car extends Vehicle
{
        //private data member
        private String travelMethod;
        //constructor
        public Car(String vehicleType, boolean passengers)
        {
                //Calling super class Constructor
                super(vehicleType,passengers);
                this.travelMethod="Wheels"; //setting value of travelmethod
        }
        //defining abstract method
        public String travelMethod(String vehicleType)
        {
                return travelMethod;
        }
        //function to display info
        public void isVehicle()
        {
                System.out.println("\nVehicle Type: "+super.getVehicleType());
                if(super.isPassengers()) //if it is passenger vehicle
                        System.out.println("It is a Passenger Vehicle");
                else //if it is cargo
                        System.out.println("It is a Cargo Vehicle");
                System.out.println("Transportation Method: "+travelMethod);
                System.out.println("It rolls with Wheels");
        }
}

Airplane Class

//child class Airplane
class Airplane extends Vehicle
{
        private String travelMethod;
        //constructor
        public Airplane(String vehicleType, boolean passengers)
        {
                super(vehicleType,passengers); //calling super class constructor
                this.travelMethod="Wings";
        }
        //defining abstract method
        public String travelMethod(String vehicleType)
        {
                return travelMethod;
        }
        //function to display info
        public void isVehicle()
        {
                System.out.println("\nVehicle Type: "+super.getVehicleType());
                if(super.isPassengers()) //if passenger vehicle
                        System.out.println("It is a Passenger Vehicle");
                else //if cargo
                        System.out.println("It is a Cargo Vehicle");
                System.out.println("Transportation Method: "+travelMethod);
                System.out.println("It Flies with Wings");
        }
}

Helicoptor Class

//child class Helicoptor
class Helicoptor extends Vehicle
{
        private String travelMethod;
        //constructor
        public Helicoptor(String vehicleType, boolean passengers)
        {
                super(vehicleType,passengers); //super class constructor
                this.travelMethod="Blades";
        }
        public String travelMethod(String vehicleType)
        {
                return travelMethod;
        }
        //function to display info
        public void isVehicle()
        {
                System.out.println("\nVehicle Type: "+super.getVehicleType());
                if(super.isPassengers())
                        System.out.println("It is a Passenger Vehicle");
                else //if cargo
                        System.out.println("It is a Cargo Vehicle");
                System.out.println("Transportation Method: "+travelMethod);
                System.out.println("It flies with Blades");
        }
}

Boat class

//child class boat
class Boat extends Vehicle
{
        private String travelMethod;
        //constructor
        public Boat(String vehicleType, boolean passengers)
        {
                super(vehicleType,passengers); //calling super class constructor
                this.travelMethod="Propeller"; //setting value of travelMethod
        }
        //defining abstract method
        public String travelMethod(String vehicleType)
        {
                return travelMethod;
        }
        //function to display info
        public void isVehicle()
        {
                System.out.println("\nVehicle Type: "+super.getVehicleType());
                if(super.isPassengers()) //if passenger vehicle
                        System.out.println("It is a Passenger Vehicle");
                else //if cargo vehicle
                        System.out.println("It is a Cargo Vehicle");
                System.out.println("Transportation Method: "+travelMethod);
                System.out.println("It travels on Water");
        }
}

Driver Class

*Name:
 * Class:
 * Date:
 */

//driver class
public class Driver {

        public static void main(String[] args) 
        {
                //creating object of each class
                Car car=new Car("Car", true);
                Helicoptor helicoptor=new Helicoptor("Helicoptor", true);
                Airplane airplane=new Airplane("Airplane", false);
                Boat boat=new Boat("Boat", false);
                //calling isVehicle() method to display info
                car.isVehicle();
                helicoptor.isVehicle();
                airplane.isVehicle();
                boat.isVehicle();
                
        }

}

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OUTPUT