Design and Implement a Multiclass Program

A course registration program

The requirements for the course registration program are stated as follows:

Each course has a number, name and can have between 1 to 15 course sections. Course sections can be added/removed to/from the course as required. The program keeps track of the number of courses.

Each course section belongs to one and only one course, and has a course registration number (CRN), a section number, and can have between 8 to 30 students and 1 to 3instructors. Students and instructors can be added/dropped to/from the course section as required.

An instructor can teach between 1 to 4 course sections. The ID number, name, department and hired date of each instructor is stored.

A student can register between 1 to 5 course sections. The ID number, name, major and admission date of each student is stored.

There is a one to one association between an instructor and the hired date. There is also a one to one association between a student and the admission date.

Each course section belongs to one and only one course, and has a course registration number (CRN), a section number, and can have between 8 to 30 students and 1 to 3instructors. Students and instructors can be added/dropped to/from the course section as required.

An instructor can teach between 1 to 4 course sections. The ID number, name, department and hired date of each instructor is stored.

A student can register between 1 to 5 course sections. The ID number, name, major and admission date of each student is stored.

There is a one to one association between an instructor and the hired date. There is also a one to one association between a student and the admission date.

Composition: is a specific type of aggregation in which the existence of one class (or object) depends on the existence of another class of object.

In UML a composition is specified with a solid diamond.

Aggregation and composition are both types of associations.

An Association describes a specific relationship between two classes (or objects) that defines the

activity between the classes (or objects). For example, an instructor teaches a course, or a student

registers for a course.

Course
-courseNumber: String -courseName: String -courseSections: ArrayList -MIN_NUMBER_OF_COURSESECTIONS=1 -MAX_NUMBER_OF_COURSESECTIONS=15 -numberOfCourses:int	Default Default Default ArrayList of capacity 15 Default 0
+Course() +Course(courseNumber: String, courseName:String)	Creates a default course object Creates a course object with the given courseNumber and courseName

Design and Implement a Multiclass Program

A course registration program

UML

Course
-courseNumber: java.lang.String -courseName: java.lang.String -numberOfCourses: int -courseSections:java.util.ArrayList +MIN_NUMBER_OF_COURSE_SECTIONS: int = 1 +MAX_NUMBER_OF_COURSE_SECTIONS: int = 15	Default Default Default 0 Default capacity 15 Course Sections
+Course() +Course(courseNumber:String, courseName:String) +getCourseNumber(): java.lang.String +getCourseName(): java.lang.String +toString():java.lang.String +getNumberOfCourses(): int +addCourseSection(courseSection: CourseSection): Boolean +removeCourseSection(courseSection:CourseSection): boolean +purge():void	Creates a default Course with the default values specified. Increases numberOfcourses by 1 Creates a Course with the given parameters and an ArrayList of CourseSection of default capacity. IncreasesnumberOfcourses by 1 Returns the String representation of the object. Include courseNumber, courseName, courseSections Adds a CourseSection to the ArrayList and returns true if it is successfully added, false if the ArrayList is at full capacity Removes a CourseSection from the ArrayList and returns true if it is successful, false if the ArrayList does not contain the specified CourseSection Removes CourseSections that have less than 8 students from all relevant ArrayLists

CourseSection
-cRN: int -courseSectionNumber: int -instructors: java.util.ArrayList -students: java.util.ArrayList +MIN_NUMBER_OF_INSTRUCTORS:int = 1 +MAX_NUMBER_OF_INSTRUCTORS:int = 3 +MIN_NUMBER_OF_STUDENTS: int= 8 +MAX_NUMBER_OF_STUDENTS: int= 30	Default 0 Default 0 Default capacity 3 Default capacity 30
+CourseSection() +CourseSection(cRN:int,courseSectionNumber:int) +getCRN():int +getCourseSectionNumber():int getInstructors():java.util.ArrayList getStudents():java.util.ArrayList +toString():java.lang.String +addInstructor(instructor: Instructor):boolean +dropInstructor(instructor: Instructor): boolean +addStudent(student: Student):boolean +dropStudent(student: Student):boolean	Creates a default CourseSection Creates a CourseSection with the given CRN and course section number and creates an ArrayList of Instructor of default capacity and an ArrayList of Student of default capacity Returns a String representation of the object. Include the cRN, courseSectionNumber, instructors and students Adds an instructor to the course section and returns true if successful, returns false if the instructor cannot be added if the capacity of the ArrayList is reached Drops an instructor from the course section and returns true if successful, returns false if the instructor is not in the ArrayList Adds a student to the course section and returns true if successful, returns false if the students cannot be added if the capacity of the ArrayList is reached Drops a student from the course section and returns true if successful, returns false if the students is not in the ArrayList

Instructor
-instructorIDNumber: int -instructorName: java.lang.String -instructorDepartment: java.lang.String -hiredDate: java.util.Date -courseSectionsTaught: java.util.ArrayList +MIN_NUMBER_OF_COURSES_TAUGHT :int = 1 +MAX_NUMBER_OF_COURSES_TAUGHT :int = 4	Default 0 Default Default Default null Default capacity of ArrayList is 4
+Instructor() +Instructor(instructorIDNumber: int, instructorName: java.lang.String,instructorDepartment: java.lang.String) +getInstructorIDNumber ():int +getInstructorName():String +getInstructorDepartment():String getCourseSectionsTaught():java.util.ArrayList +toString():java.lang.String	Creates a default Instructor object Creates an Instructor object with the given parameters. Creates a default Date object andArrayList with default capacity Returns a String representation of the object. Include only the instructorIDNumber,instructorName, instructorDepartment and hiredDate

Student
-studentIDNumber: int -studentName: java.lang.String -studentMajor: java.lang.String -admissionDate: java.util.Date -courseSectionsRegistered: java.util.ArrayList +MIN_NUMBER_OF_COURSES_REGISTERED :int = 1 +MAX_NUMBER_OF_COURSES_REGISTERED :int = 5	Default 0 Default Default Default null Default capacity of ArrayList is 5
+Student() +Student(studentIDNumber: int, studentName: java.lang.String,studentMajor: java.lang.String) +getStudentIDNumber ():int +getStudentName():String +getStudentMajor():String getCourseSectionsRegistered():java.util.ArrayList +toString():java.lang.String	Creates a default Student object Creates a Student object with the given parameters. Creates a default Date object and ArrayListwith default capacity Returns a String representation of the object. Include only the studentIDNumber, studentName,studentMajor and admissionDate

Pseudocode for the purge method

Create ArrayList named purgeCourseSections for CourseSection objects to be purged

For-loop to iterate through all CourseSection objects in ArrayList courseSections

Get and store the CourseSection

If the number of students in the CourseSection is less than 8,

Add the CourseSection to ArrayList purgeCourseSections

Get and store the ArrayList instructors from the CourseSection

Get and store the ArrayList students from the CourseSection

For-loop to iterate through all Instructor objects in ArrayList instructors

Get and store the Instructor

Get and store the ArrayList courseSectionsTaught from the Instructor

Remove the CourseSection from the ArrayList

For-loop to iterate through all Student objects in ArrayList students

Get and store the Student

Get and store the ArrayList courseSectionsRegistered from the Student

Remove the CourseSection from the ArrayList

For-loop to iterate through all CourseSection objects in ArrayList purgeCourseSections

Get and store the CourseSection

Remove the CourseSection from the ArrayList courseSections

*

Additional Methods

Include the following methods in the Instructor and Student classes

+addCourseSection(courseSection: CourseSection):boolean

Adds a CourseSection to the ArrayList and returns true if it is successfully added, false if the ArrayList is at full capacity

+dropCourseSection(courseSection: CourseSection):boolean

Removes a CourseSection from the ArrayList and returns true if it is successful, false if the ArrayList does not contain the specified CourseSection

*

TestCourseRegistration Class

Create a class TestCourseRegistration that performs the following tasks:

Creates 1 course with number, and name

Creates 2 course sections with CRN, and number

Creates 11 students and 2 instructors. Name the objects student1, student 2, student3, and student11

Instructor1 and instructor2

Adds the first 10 students and an instructor to the first course section

Adds the first course section to the 10 students and instructor

Adds the first 5 students, the 11th student and the other instructor to the second section

Adds the second course section to the 6 students and other instructor

*

TestCourseRegistration Class

Contd.:

Adds the 2 sections to the course

For the course, display the course number, course name, information for the instructor and students in each section

Display the course sections registered by student1 and the course sections taught by instructor 1

Drop student1 and student5 from the first course section

Drop the course section from the two students

Drop student3 from the second course section

Drop the second course section from the student

For the course, display the course number, course name, information for the instructor and students in each section

*

TestCourseRegistration Class

Contd.:

Display the course sections registered by student1 and the course sections taught by instructor 1

Call the purge method

For the course, display the course number, course name, information for the instructor and students in each section

Display the course sections registered by student1 and the course sections taught by instructor 2

*

View as PageDownloadToggle Fullscreen