In this chapter, you studied an inheritance hierarchy in which class BasePlusCommissionEmployee inherite However, not all types of employees are CommissionEmployees.
In this exercise, you'll create a more general Employee superclass that factors out the attributes and behav
The common attributes and behaviors for all Employees are firstName, lastName, socialSecurityNumber, g
Create a new superclass Employee that contains these instance variables and methods and a constructor. Next, rewrite class CommissionEmployee from Section 9.4.5 as a subclass of Employee.
Class CommissionEmployee should contain only the instance variables and methods that are not declared
Class CommissionEmployee's constructor should invoke class Employee's constructor, and CommissionEm
Once you've completed these modifications, run the CommissionEmployeeTest and BasePlusCommission
Problem 9.14 from Java How to Program (11th edition) by Paul Deitel & Harvey Deitel
