OOPS-lab-codes/UniversityEnrollment.java

import java.util.Scanner;

class Student {

    private int m1, m2, m3;

    // Static counter to track enrolled students
    static int studentCount = 0;

    // Static block to display welcome message
    static {
        System.out.println("Welcome to University Enrollment System");
    }

    // Constructor
    Student(int m1, int m2, int m3) {
        this.m1 = m1;
        this.m2 = m2;
        this.m3 = m3;
        studentCount++;
    }

    // Non-static method to compute average of best two marks
    void displayAverage() {
        int bestTwoSum = m1 + m2 + m3 - Math.min(m1, Math.min(m2, m3));
        double average = bestTwoSum / 2.0;
        System.out.println("Average of best two marks: " + average);
    }

    // Static method to display total enrolled students
    static void displayTotalStudents() {
        System.out.println("Total students enrolled: " + studentCount);
    }
}

public class UniversityEnrollment {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        System.out.print("Enter number of students to enroll: ");
        int n = sc.nextInt();

        for (int i = 1; i <= n; i++) {
            System.out.println("\nEnter marks for Student " + i);

            System.out.print("Mark 1: ");
            int m1 = sc.nextInt();

            System.out.print("Mark 2: ");
            int m2 = sc.nextInt();

            System.out.print("Mark 3: ");
            int m3 = sc.nextInt();

            Student s = new Student(m1, m2, m3);
            s.displayAverage();
        }

        // Display total enrolled students
        Student.displayTotalStudents();

        sc.close();
    }
}