LibraryManagementSystem.java

import java.util.Scanner;

public class LibraryManagementSystem {
    public static void main(String[] args) {
        Library library = new Library();
        Scanner scanner = new Scanner(System.in);

        // Sample data
        library.addBook(new Book(1, "The Great Gatsby", "F. Scott Fitzgerald", false));
        library.addBook(new Book(2, "1984", "George Orwell", false));
        library.addBook(new Book(3, "To Kill a Mockingbird", "Harper Lee", false));

        User user = new User(1, "Marcos");
        library.addUser(user);

        int choice;
        do {
            System.out.println("\n--- Library Management System ---");
            System.out.println("1. Display All Books");
            System.out.println("2. Search for a Book");
            System.out.println("3. Borrow a Book");
            System.out.println("4. Return a Book");
            System.out.println("5. Exit");
            System.out.print("Enter your choice: ");
            choice = scanner.nextInt();
            scanner.nextLine(); // Consume newline

            switch (choice) {
                case 1:
                    library.displayBooks();
                    break;
                case 2:
                    System.out.print("Enter book title: ");
                    String title = scanner.nextLine();
                    Book book = library.searchBook(title);
                    if (book != null) {
                        System.out.println("Book found: " + book);
                    }
                    break;
                case 3:
                    System.out.print("Enter book title to borrow: ");
                    title = scanner.nextLine();
                    book = library.searchBook(title);
                    if (book != null) {
                        user.BorrowBook(book);
                    }
                    break;
                case 4:
                    System.out.print("Enter book title to return: ");
                    title = scanner.nextLine();
                    book = library.searchBook(title);
                    if (book != null) {
                        user.ReturnBook(book);
                    }
                    break;
                case 5:
                    System.out.println("Exiting... Goodbye!");
                    break;
                default:
                    System.out.println("Invalid choice. Try again.");
            }
        } while (choice != 5);

        scanner.close();
    }
}