Answer to Question #271741 in Java | JSP | JSF for jade

Question

•  Create a public class Student that has: o three private attributes:
• name (String)
•  an array of grades (array of integers).
• finalGrade (float) which contains the average of the grades

entered in the array

• The following public methods:
•  A constructor allowing only to initialize the name of the student.
•  A setter for the attribute name
•  A method void addGrade(int nbr) in which nbr is the size
• of the array. The method should ask the user to enter the grades and then computes the average (finalGrade) without displaying it.
•  A method String toString() that returns the a String in the following format:
• Name of the student: name Final grade: finalGrade
•  Create a test class Test in which you:
•  Create an instance of the class Student
•  Change the name of your Student instance o Invoke the addGrade(int nbr) method
•  Invoke the toString() method.

Answer 1

import java.util.Scanner;

public class Student {
    private String name;
    private int[] grades;
    private float finalGrade;

    public Student(String name) {
        this.name = name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public void addGrade(int nbr) {
        Scanner in = new Scanner(System.in);
        grades = new int[nbr];
        finalGrade = 0;
        for (int i = 0; i < nbr; i++) {
            System.out.print("Enter a grade: ");
            grades[i] = in.nextInt();
            finalGrade += grades[i];
        }
        finalGrade /= grades.length;
    }

    @Override
    public String toString() {
        return "Name of the student: " + name + " Final grade: " + finalGrade;
    }
}

public class Test {
    public static void main(String[] args) {
        Student student = new Student("Mark");
        student.setName("Tom");
        student.addGrade(3);
        System.out.println(student);
    }
}