For todays lab you will be implementing two of your own inheritance hierarchies. It is a smaller/simpler lab, with an earlier deadline. The expectation being that you will also use this time to start your Project #1.

Part 1

Implement a superclass _Person.

Make two classes, _Student and _Instructor, that inherit from _Person.

• A person has a name and a year of birth (2 points)
• A student has a major (2 points)
• An instructor has a salary (2 points)

Write

• The class declarations (1 point each x 3 = 3 points)
• The appropriate constructors (2 points each for sub x 1, 1 point for super= 5 points) o Make one for each class that initializes all the data and utilizes the Super() constructor appropriately.
  • That is, the student and instructor constructors will call the super constructor with the appropriate data to initialize the persons instance variables.
  • For example, the student and instructor constructors will need the information necessary (parameters) that includes person information
• The (appropriate and overridden) _toString methods for all classes. (3 points) o For each class implementation of _toString, use (extend) behavior from each super class toStrings method in order to avoid duplicate code (Negative points for duplicate code)!
• Getters and Setters (Negative points if done wrong)

Supply a single test program that tests these classes and methods, including the constructors. (2 points)

Part 2

• Make a class _Employee with a name and salary. (2 points)
• Make a class Manager that extends Employee.
  • Add an instance variable for type _Manager, named _department, of type String.

(4 points)

• Make a class _Executive inherit from _Manager.
  • An Executive has a String that represents their office location. (3 points)
• Implement the appropriate constructors (2 points each for sub x 1, 1 point for super= 5 points) o Make one for each class that initializes all the data and utilizes the super() constructor appropriately.
  • That is, the Manager constructor will call the super constructor with the appropriate data to initialize the Employees instance variables. Same for executive.
• Supply appropriate _toString methods for all classes. (4 points) o For each implementation of _toString, use (extend) behavior from each super class toStrings method in order to avoid duplicate code. (Negative points if not done)
  • For example, override the method _toString to print the Managers name, department, and salary.
  • The Executive toString will include Manager and Employee information as well.
• Include Getters and Setters (Negative points if done wrong)

Supply a single test program that tests these classes and methods, including the constructors. (2 points)

Tips and Additional Requirements

• You do not have to test your getters and setters.
• You do have to test your constructors. You can do that by
  1. Creating the object
  2. Testing that the instance variables were set correctly by the constructor. You can do this using the getters and setters.

You need not use the automated/generated toString text that Eclipse provides. You can change it in your various classes to be something more aesthetically pleasing, for example,

I am a student majoring in X. I am also a Person whose name is A and was born in B.

All we will be checking for is that you output all the information at each level and use the super call appropriately.