In this assignment, you will develop a program that can be used by a teacher to record the student grades in his/her courses. The class diagram is given below.

Please note the following:

• A students grade is an integer value that is between 0 and 100, inclusive.
• You should apply the information hiding principle when necessary.
• Instance variables whose values do not change after being initialized must be declared final e.g., name.
• Use toString() in class Student to print the relevant objects information.
• You should define the constructors as specified. Validate the values of the instance variables when necessary.
• Method getCourseAverage() should return 0 if there is no student in the course.
• Method addStudent(Sudent s) should return false if the student s cannot be added. A student cannot be added to a course if the course is full or if the student has already been added since no two students in a course can have the same name.
• Method getBestStudent() should return a student with the best grade in the course. If there is no student in the course, the method should return null.
• Method printStudents() should print the students in the course. For each student, print the following: the name and the grade.
• In the constructor of the class Course, define the array students as follows:

students = new Student[10];

We will assume that the maximum capacity of the course is 10 students.

Create a test class named CourseTest which contains the main method. In it, create several classes with several arbitrary students. Test your program and ensure that the results are correct.

Course Student - students: Student [] -name: String -grade: int > Course + getCourse Average(): int + getBestStudent(): Student + addStudent(Students): boolean + printStudents() > Student name: String, grade:int) + setGrade/grade:int) + getGrade(); int + toString(): String Course Test