StudentGradeTracker.java

import java.util.Scanner;

public class StudentGradeTracker {

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);

        System.out.println("========================================");
        System.out.println("       STUDENT GRADE TRACKER");
        System.out.println("========================================");

        // Get number of students
        System.out.print("\nEnter number of students: ");
        int n = sc.nextInt();

        sc.nextLine(); // Clear input buffer

        // Arrays to store student information
        String[] names = new String[n];
        double[] grades = new double[n];

        // Input student details
        for (int i = 0; i < n; i++) {

            System.out.print("\nEnter student " + (i + 1) + " name: ");
            names[i] = sc.nextLine();

            System.out.print("Enter " + names[i] + "'s grade: ");
            grades[i] = sc.nextDouble();

            sc.nextLine(); // Clear input buffer
        }

        // Variables for calculations
        double total = 0;
        double highest = grades[0];
        double lowest = grades[0];

        int highestIndex = 0;
        int lowestIndex = 0;

        // Calculate total, highest and lowest
        for (int i = 0; i < n; i++) {

            total = total + grades[i];

            if (grades[i] > highest) {
                highest = grades[i];
                highestIndex = i;
            }

            if (grades[i] < lowest) {
                lowest = grades[i];
                lowestIndex = i;
            }
        }

        // Calculate average
        double average = total / n;

        // Display summary report
        System.out.println("\n========================================");
        System.out.println("          SUMMARY REPORT");
        System.out.println("========================================");

        System.out.printf("%-20s %s%n", "Student", "Grade");
        System.out.println("----------------------------------------");

        for (int i = 0; i < n; i++) {
            System.out.printf(
                    "%-20s %.2f%n",
                    names[i],
                    grades[i]
            );
        }

        System.out.println("----------------------------------------");

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

        System.out.println("----------------------------------------");

        System.out.println("Highest Scorer      : " + names[highestIndex]);
        System.out.println("Lowest Scorer       : " + names[lowestIndex]);

        System.out.println("========================================");

        System.out.println("\nThank you for using Student Grade Tracker!");

        sc.close();
    }
}