Assignment Four checklist

Again, this is not an exhaustive list, but should help you think through what you might have missed.

Entries in blue are for $\text{'}$ A $\text{'}$ work.

Student Grade program

The problem

You have been asked to develop a program to read in student's grades from a text file. For each

student, there is a line that has the student's name followed by six weekly grades plus a final. Each of

the weekly grades is worth $10$ percent of the total grade; the final is worth $40$ percent. The program

should display a menu that allows the user to choose from the following options: show student with the

highest total grade, show student with lowest total grade, and quit. For each of the menu items, the

program should display the name of the student followed by the grade. This is also true when all

students are listed. Grades should be displayed with a single decimal place.

The user will be displayed this menu until they choose to quit; at that point the program will exit.

Restrictions and file format

The first line of the file is the name of the course; it could include spaces, e$.$g$.$ CPT$-237$ Advanced Java.

The lines following the first line consist of a string $($the first name of the student$),$ six integers containing

the weekly grades and one more integer representing the grade for the final exam. This means that all

lines except the first look like:

Emma $\{$:$[88,88,83,81,80,78,82]$:$\}$

The files are guaranteed to have no more than fifty students. You are guaranteed that there will never

be a line with too many grades or not enough grades. You are also guaranteed that all of the values are

separated with whitespace, that is$,$ tabs or spaces.

Implementation Notes

You should have a single class to represent the course to which the grades belong. For the purposes of

this document, I will refer to it as ClassRoom. You may choose another name if you'd like. This class will

have the following fields and methods:

Fields

nameOfCourse $-$ a String that holds the name of the course pulled from the file.

names $-$ an array of strings that holds all the names of the students. No more than fifty student records

will be in the file.

totalGrades $--$ an array of doubles that holds the total grade of each student; this array should be

parallel to the names array such that the name matches the grade at the same index.

numStudents $-$ the number of students records loaded from the file.

Methods

constructor $-$ The class does not need a constructor. The default constructor is sufficient as long as the

two arrays are initialized when they are declared.

loadGrades $-$ a method that takes the path to a file as its only argument. It will open the file, process

the contents and close the file. Keep in mind that the first line is simply the name of the course. You

will need to start your loop to read in the rest of the file AFTER you read in the first line. Remember to

keep track of how many students there are.

findMaxGrade $-$ a method that returns the index of the maximum total grade. It does not need any

arguments.

findMinGrade $-$ a method that returns the index of the minimum total grade. It does not need any

arguments.

getNameByIndex $-$ a method that takes an integer as an argument which is used as an index into the

names array and returns the name at that index.

getGradeByIndex $-$ a method that takes an integer as an argument which is used as an index into the

totalGrades array and returns the grade at that index.

addStudent $-($optional$)$ a private method that accepts a student's name and the seven grades from the

file. It will calculate the student's total grade and add the student and the total grade to the

corresponding arrays. The method should be private because it will only be called from within the

ClassRoom class; in particular, it would be called from the loadGrades method. The addStudent method

should not be static.

As always with our programs, your menu should look nice. The user should be able to enter a single

character to select something in the menu. The program should not care whether the user enters upper

or lowercase characters; the behavior should be the same for $\text{'}$ Q $\text{'}$ or $\text{'}$ q $\text{'},$ for example.

When displaying student grades, there should be one decimal place displayed. The output should line

up nicely in columns. Sample output might look like:

Notes: The grades in the file are integers. However, you must store your total grades as doubles since

they represent averages. There are several ways to calculate the student's grade. One easy way is to

sum the first six grades plus four times the last grade. Then divide the total by $100.$ Make certain you

get a double. $($For example, a six $90^(\text{'})$ s and a $93-$ a total of $912-$ should give a grade of $91\mathrm{.}2$ not $91.)$

You are not required to keep the individual grades in the ClassRoom class, only the total grade for each

student. This means that you can determine the total grade for each student as each line is processed.

One good way to do this is to read all the grades and call the addStudent method mentioned above.

No communication wi

For a starting grade of $\text{'}$ B $\text{'}$:

$|$