Assignment Title: Student Records Management

Description:

Create a program to manage student records. The program should allow the user to read student

information from a file, perform operations on the records, and write the modified records back to a

file. You will also implement inheritance to handle different types of students.

Instructions:

$1.$ Create a class named "Student" with the following attributes:

$-$ id $($int$)$: The student's identification number.

$-$ name $($String$)$: The student's name.

$-$ grade $($double$)$: The student's overall grade.

$2.$ Create a constructor in the Student class to initialize the attributes.

$3.$ Create a method named "displayInfo" in the Student class that prints the student's information.

$4.$ Create two subclasses named "UndergraduateStudent" and "GraduateStudent" that inherit from

the Student class.

$5.$ The UndergraduateStudent class should have an additional attribute:

$-$ year $($int$)$: The student's current year of study.

$6.$ The GraduateStudent class should have an additional attribute:

$-$ researchTopic $($String$)$: The topic of the student's research.

$7.$ Implement the necessary constructors and displayInfo methods in the subclasses.

$8.$ Implement $$equals$$ method in all classes.

$9.$ Create a main class named "StudentRecordsManager" that will serve as the entry point for your

program.

$10.$ In the StudentRecordsManager class, implement the following methods:

$-$ readFromFile$($String filename$)$: Reads student records from a file specified by the filename

parameter. Each line in the file should contain a student's information in the following format:

$"$id$,$name,grade,year,researchTopic" $($for GraduateStudent$)$ or $"$id$,$name,grade,year" $($for

UndergraduateStudent$).$ Store the records in an appropriate data structure $($e$.$g$.,$ ArrayList$).$

$-$ writeToFile$($String filename, ArrayList students$)$: Writes the student records stored in

the ArrayList back to a file specified by the filename parameter. Each line in the file should follow

the same format as mentioned above.

$-$ displayStudentInfo$($ArrayList students$)$: Displays the information of all students in the

ArrayList.

$-$ calculateAverageGrade$($ArrayList students$)$: Calculates and returns the average grade

of all students.

$11.$ In the main method of the StudentRecordsManager class, create an instance of the class and

perform the following actions:

$-$ Call the readFromFile method to read student records from a file.

$-$ Call the displayStudentInfo method to display the student records.

$-$ Call the calculateAverageGrade method and display the average grade.

$-$ Modify the records $($e$.$g$.,$ change the grade of a student$)$ as per the rules below:

$$ Increase scores between $80-90$ by $2$ points $($so $85\mathrm{.}5$ will be $87\mathrm{.}5,81\mathrm{.}9$ will be $83\mathrm{.}9$ etc.$)$

$$ Increase score $>90$ by $1$ points

$$ Decrease score $<80$ by $2$ points

$-$ Call the calculateAverageGrade method and display the average grade.

$-$ Call the writeToFile method to write the modified records back to a file.

$-$ Call readFromFile and then displayStudentInfo method again to verify the changes.

Note: Make sure to handle file I$/$O exceptions and provide appropriate error messages to the user.

Submission:

Submit the Java source code file$($s$),$ screenshot of the output and updated student record file. Also

include a writeup that describes your implementation. Submission without the writeup will get a score

of $0.$

Remember to comment your code appropriately and provide meaningful variable and method names.