Example-2A) Create a super (parent) class called Course. The Course class represents any course thatdoes not have a lab (without a lab). The class should include the followings:*Private attributes:o courseCode (type string)o examMark (type double)O courseWorkMark (type double)"A constructor that initializes the three attributes of the class.*A public and static variable called noOfCourses (stands for number of courses). Theinitial value for this variable is 0 and it increases with every new course object created.A public method called finalMark () which returns the total sum of course' marks. Thetotal mark is computed as (examMark + courseWorkMark)."A public and static method called getNoOfCourses(). it returns the total number ofcourses created.•An overriden method called toString(), which returns a string that represents the Courseobject.fppt.comExample-2B) Extend the above Course code by creating a sub (child) class called CourseLab.The CourseLab inherits the super class Course. The class should include the followings:*An attribute called labMark (type double), which represents the mark of the lab.•A constructor that initializes the attributes of the class. (Hint: don't forget to consider thesuper class' constructor using the keyword: super).*An overriden method called finalMark (), which returns the total sum of course' marks inthis sub class. The total mark in this case is computed as (examMark + course WorkMark +labMark)."An overriden method called toString(), which returns a string that represents theCourseLab object.C) Write an application with a main Method that creates objects from the classes Course andCourseLab and displays the objects information. Your application code should also displaythe total number of courses that have been created.

NOTE: Programming language is not mentioned, so I am doing in JAVA In this question, there are three…

Answered: A) Create a super (parent) class called…

A) Create a super (parent) class called Course. The Course class represents any course that does not have a lab (without a lab). The class should include the followings:

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Concept explainers

OOPs

In today's technology-driven world, computer programming skills are in high demand. The object-oriented programming (OOP) approach is very much useful while designing and maintaining software programs. Object-oriented programming (OOP) is a basic programming paradigm that almost every developer has used at some stage in their career.

Constructor

The easiest way to think of a constructor in object-oriented programming (OOP) languages is:

Question

Example-2
A) Create a super (parent) class called Course. The Course class represents any course that
does not have a lab (without a lab). The class should include the followings:
*Private attributes:
o courseCode (type string)
o examMark (type double)
O courseWorkMark (type double)
"A constructor that initializes the three attributes of the class.
*A public and static variable called noOfCourses (stands for number of courses). The
initial value for this variable is 0 and it increases with every new course object created.
A public method called finalMark () which returns the total sum of course' marks. The
total mark is computed as (examMark + courseWorkMark).
"A public and static method called getNoOfCourses(). it returns the total number of
courses created.
•An overriden method called toString(), which returns a string that represents the Course
object.
fppt.com
Example-2
B) Extend the above Course code by creating a sub (child) class called CourseLab.
The CourseLab inherits the super class Course. The class should include the followings:
*An attribute called labMark (type double), which represents the mark of the lab.
•A constructor that initializes the attributes of the class. (Hint: don't forget to consider the
super class' constructor using the keyword: super).
*An overriden method called finalMark (), which returns the total sum of course' marks in
this sub class. The total mark in this case is computed as (examMark + course WorkMark +
labMark).
"An overriden method called toString(), which returns a string that represents the
CourseLab object.
C) Write an application with a main Method that creates objects from the classes Course and
CourseLab and displays the objects information. Your application code should also display
the total number of courses that have been created.

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