[Solved] CSIT121 Lab 3-Subclass of Ship called CruiseShip

Following completion of this task, students should be able to:

• Design and implement abstract class and interface

Question 1

Declare and implement an abstract class called Ship that has the following:

• An attribute to represent the name of the ship.
• An attribute to represent the year that the ship was built.
• A default constructor to initialize the attributes.
• Accessor methods and mutator methods for each of the attribute.
• An abstract method called displayDetails().

Declare and design a subclass of Ship called CruiseShip. The CruiseShip class should have the following: An additional attribute to keep the maximum number of passengers.

• A default constructor to initialize the attribute in CruiseShip as well as the Ship Accessor methods and mutator methods for its attribute.
• The displayDetails()method that will display all details from Ship and _CruiseShip.

Declare and implement another subclass of Ship called CargoShip. The CargoShip class should have the following:

• An attribute to keep the cargo capacity in tonnage.
• A default constructor to initialize the attribute in _CargoShip as well as the Ship Accessor methods and mutator methods for its attribute.
• The displayDetails()method that will display all details from Ship and _CargoShip.

Write a main() method in another class called ShipApp. Declare an ArrayList<Ship> to keep several CruiseShip and CargoShip objects. Use a simple menu to allow the user to

• add either a CruiseShip or a CargoShip
• edit either the number of passengers for a CruiseShip or the cargo capacity for the CargoShip
• display all the objects in the ArrayList.