please do in java firstname_lastname_assignment_6.zip ├── library │ └── docs │ └── StudentGrades.java Folder Structure Your project will contain three sub-directories: library test In the library directory, create the StudentGrades class. In the test directory, create the test application (Part 1). StudentGrades Class Write a class encapsulating the concept of Student Grades. Use the class diagram above as well as the specific requirements below to develop your class: Class Members The attribute grades will store grades for students. StudentGrades(int) - Initializes grades to a new array with the specified number of elements. The grade values are zero. StudentGrades(int[]) - Initializes grades to the specified array. Ensure that the reference to the grades is not accessible outside of the class. copyArray(int[]) : int[] - Returns a copy of the specified array. getGrades() : int[] - Returns a copy of the grades. setGrades(int[]) : void - Sets the grades. Ensure that the reference to the grades is not accessible outside of the class. getSortedGrades() : int[] - Returns a new array containing the values of the grades attribute sorted in ascending order. getHighestGrade() : int - Returns the value of the highest grade in the grades. getAverageOfGrades() : double - Returns the mean average of the values in the grades array. Formula: (grades[0] + grades[1] + …. grades[n]) / number of elements in array The toString will return a String representation of the class in the following format: toString Format =================== Student Grade =================== 1 {first element value} 2 {second element value} ... n {nth element value} Example =================== Student Grade =================== 1 79 2 54 ... n 82

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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please do in java

firstname_lastname_assignment_6.zip
├── library
│ └── docs
│ └── StudentGrades.java

Folder Structure

Your project will contain three sub-directories:

library
test

In the library directory, create the StudentGrades class. In the test directory, create the test application (Part 1).

StudentGrades Class

Write a class encapsulating the concept of Student Grades. Use the class diagram above as well as the specific requirements below to develop your class:

Class Members

The attribute grades will store grades for students.
StudentGrades(int) - Initializes grades to a new array with the specified number of elements. The grade values are zero.
StudentGrades(int[]) - Initializes grades to the specified array. Ensure that the reference to the grades is not accessible outside of the class.
copyArray(int[]) : int[] - Returns a copy of the specified array.
getGrades() : int[] - Returns a copy of the grades.
setGrades(int[]) : void - Sets the grades. Ensure that the reference to the grades is not accessible outside of the class.
getSortedGrades() : int[] - Returns a new array containing the values of the grades attribute sorted in ascending order.
getHighestGrade() : int - Returns the value of the highest grade in the grades.
getAverageOfGrades() : double - Returns the mean average of the values in the grades array.
- Formula: (grades[0] + grades[1] + …. grades[n]) / number of elements in array
The toString will return a String representation of the class in the following format:

toString Format

===================

Student Grade

===================

1 {first element value}

2 {second element value}

...

n {nth element value}

Example

===================

Student Grade

===================

1 79 2 54

...

n 82

Class Diagram
Student Grades
-grades: int[]
+StudentGrades (numberOfStudents : int)
+StudentGrades (grades: int[])
-copyArray(toCopy: int[]): int[]
+getGrades() int[]
+ setGrades (grades int[]): void
+getSorted Grades(): int[]
+getHighestGrade(): int
+getAverageOfGrades(): double
+toString(): String

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