StudentGradeTracker.java

import java.util.ArrayList;
import java.util.Scanner;

class Student {
    String name;
    double grade;

    Student(String name, double grade) {
        this.name = name;
        this.grade = grade;
    }
}

public class StudentGradeTracker {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        ArrayList<Student> students = new ArrayList<>();

        int choice;

        do {
            System.out.println("\n..... Student Grade Tracker .......");
            System.out.println("1. Add Student");
            System.out.println("2. View Summary Report");
            System.out.println("3. Exit");
            System.out.print("Enter your choice: ");
            choice = sc.nextInt();
            sc.nextLine();

            switch (choice) {
                case 1:
                    System.out.print("Enter student name: ");
                    String name = sc.nextLine();

                    System.out.print("Enter student grade: ");
                    double grade = sc.nextDouble();

                    students.add(new Student(name, grade));
                    System.out.println("Student added successfully!");
                    break;

                case 2:
                    displayReport(students);
                    break;

                case 3:
                    System.out.println("Exiting program...");
                    break;

                default:
                    System.out.println("Invalid choice! Try again.");
            }

        } while (choice != 3);

        sc.close();
    }

    public static void displayReport(ArrayList<Student> students) {
        if (students.isEmpty()) {
            System.out.println("No student records available.");
            return;
        }

        double total = 0;
        double highest = students.get(0).grade;
        double lowest = students.get(0).grade;

        System.out.println("\n===== Student Summary Report =====");
        System.out.printf("%-20s %-10s%n", "Student Name", "Grade");
     

        for (Student student : students) 
        {
            System.out.printf("%-20s %-10.2f%n",
             student.name, student.grade);
            total += student.grade;

            if (student.grade > highest)
                highest = student.grade;

            if (student.grade < lowest)
                lowest = student.grade;
        }

        double average = total / students.size();

        System.out.println("--------------------------------");
        System.out.printf("Average Score : %.2f%n", average);
        System.out.printf("Highest Score : %.2f%n", highest);
        System.out.printf("Lowest Score  : %.2f%n", lowest);
    }
}