6 (10 pts) Explain why the following class hierarchy is not reasona

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6. (10 pts) Explain why the following class hierarchy is not

reasonable:

DefenseDepartmentGeneral

Private

7. (10 pts) Give at least one example of a reasonable field

for each of the following classes in the following class

hierarchy. Be sure that the field is at the right level in the

hierarchy.

Vehicle

Car

Airplane

Passenger

Fighter

Bomber

SpaceShip

8. (10 pts) Give at least one example of a reasonable

method for each of the following classes in the following

class hierarchy. Be sure that the method is at the right

level in the hierarchy. Constructors, getters and setters

don\'t count for this problem.

Vehicle

Car

Airplane

Passenger

Fighter

Bomber

SpaceShip

9. (10 pts) Are a Private and a Platoon in an encapsulation

or an inheritance relationship? Explain

10. (10 pts) Present reasonable parent and child classes

for the class Tree (the biological kind). Give a short

explanation for why the classes you are proposing are in

good parent-child relationships.

Solution

DefenseDepartmentGeneral

Generally we will keep the names to the classes related to

the area which we want to make it a class.Based on that

as we observed the class name

DefenseDepartmentGeneral.Means its related to the

DefenseDepartment.So it might have some crucial or

sensitive information.If we provide sub class to that

DefenseDepartmentGeneral class then the sub class can

access the methods of the super class and also the super

class variables.This leads to the security issues.So it not

recommended to make subclass to the

DefenseDepartmentGeneral.

Class Name ------ Field Name

Vehicle Number_of_wheels

Car steering_type (or) brakes_type

Airplane type_of_plane(for commercial

purpose or for cargo)

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6. (10 pts) Explain why the following class hierarchy is not reasonable: DefenseDepartmentGeneral Private 7. (10 pts) Give at least one example of a reasonable field for each of the following classes in the following class hierarchy. Be sure that the field is at the right level in the hierarchy. Vehicle Car Airplane Passenger Fighter Bomber SpaceShip 8. (10 pts) Give at least one example of a reasonable method for each of the following classes in the following class hierarchy. Be sure that the method i s at the right level in the hierarchy. Constructors, getters and setters don\'t count for this problem. Vehicle Car Airplane Passenger Fighter Bomber SpaceShip 9. (10 pts) Are a Private and a Platoon in an encapsulation or an inheritance relationship? Expl ain 10. (10 pts) Present reasonable parent and child classes for the class Tree (the biological kind). Give a short explanation for why the classes you are proposing are in good parent-child relationships. Solution 6) DefenseDepartmentGeneral Generally we will keep the names to the classes related to the area which we want to make it a class.Based on that as we observed the class name DefenseDepartmentGeneral.Means its related t ...
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