$1.$ Requirements $7$:$45$ PM Sun Jul $21$

CourseDemo

Q

Done This class stores data about an instructor.

$*/$

public class Instructor

$\{$private String firstName; $//$ First name$/**$ first name, and office number. @param fname The instructor's first name.$*/$ String office$)$ lastName $=$ lname;$\}/**$ as a copy of another Instructor object.$*/\{$ firstName $=$ object$2.$firstName;$\}$ The set method sets a value for each field. @param fname The instructor's first name.$*/$ String office$)$ lastName $=$ lname; officeNumber $=$ office;$/**$ @return A string containing the instructor$*/\{$ String str $=$ "Last Name: $"+$ lastName $+"\backslash$moffice Number: $"$t ott$7$cenumber: $\backslash$ private String firstName; $//$ First name$/**$ first name, and office number. @param fname The instructor's first name.$*/$ String office$)$ lastName $=$ lname; officeNumber $=$ office;$/**$ as a copy of another Instructor object.$*/\{$ firstName $=$ object$2.$firstName;$\}$ The set method sets a value for each field. @param fname The instructor's first name.$*/$ String office$)$ lastName $=$ lname; officeNumber $=$ office;$/**$ @return A string containing the instructor$*/\{$ String str $=$ "Last Name: $"+$ lastName $+"$

Office Number: $"+$ officeNumber; return str;$\}$ courseName $=$ name;$//$ instr as an argument to the copy constructor.$//$ Create a new TextBook object, passingtextBook $=$ new TextBook$($text$)$;$/**$ @return The name of the course.public String getName$()$ return courseName;$/**$ @return A reference to a copy of this course's$*/\{$ return new Instructor$($instructor$)$;$/**$ @return A reference to a copy of this course's$*/\{$ return new TextBook$($textBook$)$;$/**$ @return A string containing the course information.public String toString$()//$ Create a string representing the object. $"$

Instructor Information:

$"+"$

Textbook Information:

$"+//$ Return the string.$\}$

$\}$private String author; $//$ Author's last name

private String publisher; $//$ Name of publisher

$\frac{?}{?}**$

This constructor initializes the title,

author, and publisher fields

@param textTitle The book's title.

@param auth The author's name.

@param pub The name of the publisher.

$\frac{*}{?}$

public TextBook$($String textTitle, String auth,

String pub$)$

$\{$

title $=$ textTitle;

author $=$ auth;

$\}$

publisher $=$ pub;

$\frac{?}{?}**$

The copy constructor initializes the object

as a copy of another TextBook object.

@param object$2$ The object to copy.

$*/$

public TextBook$($TextBook object$2)$

$\{$

title $=$ object$2.$title;

author $=$ object$2.$author;

publisher $=$ object$2.$publisher;

$\}$

$\frac{?}{?}**$

The set method sets a value for each field.

@param textTitle The book's title.

@param auth The author's name.

@param pub The name of the publisher.

$*/$

public void set$($String textTitle, String auth,

String pub$)$

$\{$

title $=$ textTitle;

author $=$ auth;

publisher $=$ pub;

$\}$

$\frac{?}{?}**$

toString method

@return A string containing the textbook

information.

$\frac{*}{?}$

public String toString$()$

$\{$

$//$ Create a string representing the object.

String str $=$ "Title: $"+$ title $+$

$"$

Author: $"+$ author $+$

$"$

Publisher: $"+$ publisher;

$//$ R

In this assignment, you will modify the provided sample code that includes

Instructor.java, TextBook.java, Course.java and CourseDemo.java. The $4$ programs

work together with aggregation. The following modifications are required:

$1)$ Add a field variable in Course.java to represent course number $($e$.$g$.,$ CSCI $1302)$

so that a course object will include course number, course name, instructor, and

textbook. You may need to modify the rest of Course.java accordingly due to the

addition of course number variable $[20$ marks$].$

$2)$ Add a constructor Course$($Course object$2)$ to Course.java so that a course can be

constructed from another course $[10$ marks$].$

$3)$ Modify CourseDemo.java to create $5$ different instructor objects, $5$ different

textbook objects and $5$ different course objects. The $5$ instructors and $5$ textbooks

must be used in defining the $5$ course objects so that each course object has a

different instructor and a different textbook. Please store $5$ instructor objects in an

instructor array, $5$ textbook objects in a textbook array, and $5$ courses in a course

array $[40$ marks$].$

$4)$ Use a loop to go through the course array and print the full information of $5$

courses. Please ensure the output is properly formatted via the toString$()$ method

$[20$ marks$].$

$5)$ Please produce a screenshot to show how your program works $[5$ marks$].$

$6)$ Please comment your code properly $($e$.$g$.,$ header comment, code comment$)$ and

follow professional programming style $($e$.$g$.,$ indentations, naming, etc.$)[5$ marks$].$

$2.$ Submission

$1)$ Your code $($Course$.$java, Instructor.java, TextBook.java, CourseDemo.java$).$

$2)$ Screenshots showing how your code works