Main.java

import java.util.Scanner;

public class Main{

    public static void main(String Args[]){

        Scanner sc=new Scanner(System.in);
        StudentManager manager = new StudentManager();
        manager.loadFromFile();

        while(true){
            System.out.println("1. Add Student");
            System.out.println("2. View Students");
            System.out.println("3. Search Student");
            System.out.println("4. Delete Student");
            System.out.println("5. Exit");
            System.out.print("Enter your choice: ");
            int choice = sc.nextInt();
            sc.nextLine(); // Consume newline

            switch(choice){
                case 1:
                    System.out.print("Enter ID: ");
                    int id = sc.nextInt();
                    sc.nextLine(); // Consume newline
                    System.out.print("Enter Name: ");
                    String name = sc.nextLine();
                    System.out.print("Enter Age: ");
                    int age = sc.nextInt();
                    sc.nextLine(); // Consume newline
                    System.out.print("Enter Course: ");
                    String course = sc.nextLine();
                    manager.addStudent(new Student(id, name, age, course));
                    manager.saveToFile();
                    break;
                case 2:
                    manager.viewStudents();
                    break;
                case 3:
                    System.out.print("Enter ID to search: ");
                    int searchId = sc.nextInt();
                    manager.searchStudent(searchId);
                    break;
                case 4:
                    System.out.print("Enter ID to delete: ");
                    int deleteId = sc.nextInt();
                    manager.deleteStudent(deleteId);
                    manager.saveToFile();
                    break;
                case 5:
                    System.out.println("Exiting...");
                    sc.close();
                    return;
                default:
                    System.out.println("Invalid choice. Please try again.");
            }
        }
    }
}