MATLAB Object-Oriented Programming

Employees

Sales People and Engineers are

subsets of Employees

Te st

Engineers

Sales
People

Engineers

Employees

Base class

Properties

Name

Address

Department

SalesPerson

(is an Employees)

Derived classes

Properties

Commission

Region

Engineer

(is an Employees)

Properties

Products

Te am

Te stEngineer

(is an Engineer)

Properties

Te stStage

The root of the hierarchy is the Employees class. It contains data and operations that

apply to the set of all employees. Contained in the set of employees are subsets whose

members, while still employees, are also members of sets that more specifically define the

type of employee. Subclasses like TestEngineer are examples of these subsets.

Develop the Abstraction

Classes are representations of real world concepts or things. When designing a class,

form an abstraction of what the class represents. Consider an abstraction of an employee

and what are the essential aspects of employees for the intended use of the class. Name,

address, and department can be what all employees have in common.

Hierarchies of Classes — Concepts