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Student.java
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Student.java
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import java.util.Scanner;
public class Student {
private String name;
private double[] scores;
private char grade;
// Constructor to initialize the student's attributes
public Student(String name, int numberOfSubjects) {
this.name = name;
scores = new double[numberOfSubjects];
}
// Method to take user input for the student's scores
public void enterMarks() {
Scanner scanner = new Scanner(System.in);
System.out.println();
for (int i = 0; i < scores.length; i++) {
System.out.print("Enter Subject "+ (i + 1) + " Score : ");
try {
double marks=scanner.nextDouble();
if(marks > 100 || marks<0){
System.out.println("Invalid Input 'Please enter Marks between 0 to 100 !'");
i--; // Retry input for the same score
}else{
scores[i] = marks;
}
} catch (Exception e) {
System.out.println("Invalid input. Please enter a valid numeric score.");
scanner.next(); // Consume invalid input
i--; // Retry input for the same score
}
}
scanner.close();
}
// Method to calculate the average score and determine the corresponding grade
public void calculateGrade() {
double sum = 0;
for (double score : scores) {
sum += score;
}
double average = sum / scores.length;
if (average >= 90) {
grade = 'A';
} else if (average >= 80) {
grade = 'B';
} else if (average >= 70) {
grade = 'C';
} else if (average >= 60) {
grade = 'D';
} else {
grade = 'F';
}
}
// Method to display the student's name, scores, average, and grade
public void displayInformation() {
System.out.println("Student Name: " + name);
System.out.println("Scores: ");
int subjectNumber=0;
for (double score : scores) {
System.out.println(" Subject "+ ++subjectNumber +" : " + score + " ");
}
System.out.println();
System.out.println("Average Score: " + calculateAverage());
System.out.println("Grade: " + grade);
System.out.println();
}
// Method to calculate and return the average score
public double calculateAverage() {
double sum = 0;
for (double score : scores) {
sum += score;
}
return sum / scores.length;
}
public static void main(String[] args) {
int numberOfSubjects;
Scanner scanner = new Scanner(System.in);
System.out.print("Enter student's name: ");
String name = scanner.nextLine();
do{
System.out.print("Enter the number of subjects : ");
numberOfSubjects = scanner.nextInt();
if(numberOfSubjects <= 0){
System.out.println(" Invalid Input - Subjects Should be Greater than 0 ");
}
}while(numberOfSubjects <= 0);
Student student = new Student(name, numberOfSubjects);
student.enterMarks();
student.calculateGrade();
student.displayInformation();
scanner.close();;
}
}