Description
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: ### I’m a Ferrari car, my color is (some color) and have (no. of doors) doors ###
Ford class: *** I’m a Ford truck, and I have (no of gears) gears ***
