[Solved] An application that shows how class inherit from parent class and implement an interface

Designing an application that shows how class inherit from parent class and implement an interface.

• Specifications

Class diagram has been provided to follow

<<Interface>>

Vehicle

+drive() : void

+stop() : boolean

+steer : (int)

Car

+doors : Integer

+wheels : Integer

+color : String

Car()

+drive() : void

+stop() : boolean

+steer(int) : void

Ferrari

+Badge : String

+Year : Integer

+Price : Double

Truck

+Gear : Integer

+horn : Integer

Truck()

+drive() : void

+stop() : boolean

+steer(int) : void

+honk() : void

Ford

Ford()

+drive() : void

+stop() : void

+steer(int) : void

+honk() : void

Input

No user input require

Processing

For each class created output the total to the screen.

• proper use to package is necessary
• all sub classes must override toString method with simple String message, use System.out.println statement for output
• create instance variables and method shown in Class diagram for all classes
• create an interface called Vehicle
• create a parent class called Car which implements Vehicle interface
• create a parent class called Truck which implements Vehicle interface
• create a child class called Ferrari which extends from Car class
• create a child class called Ford which extends from Truck class
• create a class called TestClass with main method
• create instance variable of type ArrayList in TestClass to hold instance of Ferrari and Truck classes
• add few instances of both classes into ArrayList object
• loop over ArrayList and call display method of objects in ArrayList

Output

The following is a sample run of the program:

Ferrari class: ### Im a Ferrari car, my color is (some color) and have (no. of doors) doors ###

Ford class: *** Im a Ford truck, and I have (no of gears) gears ***