Objectives a . Exploring Inheritance and Overriding Methods Be able to design inheritance class relationships Be able to use an abstract class Be able to override a virtual methods and implement an abstract method Pre-Lab Questions 1. Give an example of a good use of an abstract class not mentioned in the class. 2. How many children can any parent class have? How many parents can a child class have? 3. How can you make sure a method is not overridden in a child class? Activities: In this lab activity, we design an inheritance hierarchy containing types of employees in a company's payroll application. In this company, commission employees (who will be represented as objects of a superclass) are paid a percentage of their sales, while base-salaried commission employees (who will be represented as objects of a subclass) receive a base salary plus a percentage of their sales. You need to implement the following design. In the Testapplication you need to create a commissionEmployee object and a BasePlusCommissionEployee object using a data of your choice. Then call the toString method and print the earning on each object. Commission Employee firstName String lastName String social Security Number String grossSales double commission Rate double CommissionEmployee(first String, last String, ssn String, sales double rate doubk setFirstName(first String) void getFirstName() String setLastName(last String) void getLastName() String setSocialSecurityNumber(ssn String) void getSocial SecurityNumber() String Slobova Objectives a . Exploring Inheritance and Overriding Methods Be able to design inheritance class relationships Be able to use an abstract class Be able to override a virtual methods and implement an abstract method Pre-Lab Questions 1. Give an example of a good use of an abstract class not mentioned in the class. 2. How many children can any parent class have? How many parents can a child class have? 3. How can you make sure a method is not overridden in a child class? Activities: In this lab activity, we design an inheritance hierarchy containing types of employees in a company's payroll application. In this company, commission employees (who will be represented as objects of a superclass) are paid a percentage of their sales, while base-salaried commission employees (who will be represented as objects of a subclass) receive a base salary plus a percentage of their sales. You need to implement the following design. In the Testapplication you need to create a commissionEmployee object and a BasePlusCommissionEployee object using a data of your choice. Then call the toString method and print the earning on each object. Commission Employee firstName String lastName String social Security Number String grossSales double commission Rate double CommissionEmployee(first String, last String, ssn String, sales double rate doubk setFirstName(first String) void getFirstName() String setLastName(last String) void getLastName() String setSocialSecurityNumber(ssn String) void getSocial SecurityNumber() String Slobova