Library.java

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

class Library {

    // ArrayList to store books
    ArrayList<String> books = new ArrayList<>();

    // Method to add books
    void addBook(String book) {

        if (books.contains(book)) {
            System.out.println("Book Already Exists");
        } else {
            books.add(book);
            System.out.println("Book Added Successfully");
        }
    }

    // Method to search books
    void searchBook(String book) {

        if (books.contains(book)) {
            System.out.println("Book Found");
        } else {
            System.out.println("Book Not Found");
        }
    }

    // Method to delete books
    void deleteBook(String book) {

        if (books.remove(book)) {
            System.out.println("Book Deleted Successfully");
        } else {
            System.out.println("Book Not Found");
        }
    }

    // Method to display all books
    void displayBooks() {

        if (books.isEmpty()) {
            System.out.println("No Books Available");
        } else {

            System.out.println("\nAvailable Books:");

            for (String book : books) {
                System.out.println("- " + book);
            }
        }
    }

    // Main method
    public static void main(String[] args) {

        Library lib = new Library();
        Scanner sc = new Scanner(System.in);

        int choice;

        do {

            System.out.println("\n===== LIBRARY MANAGEMENT SYSTEM =====");
            System.out.println("1. Add Book");
            System.out.println("2. Search Book");
            System.out.println("3. Delete Book");
            System.out.println("4. Display Books");
            System.out.println("5. Exit");

            System.out.print("Enter Your Choice: ");
            choice = sc.nextInt();
            sc.nextLine();

            switch (choice) {

                case 1:

                    System.out.print("Enter Book Name: ");
                    String addBook = sc.nextLine();

                    lib.addBook(addBook);
                    break;

                case 2:

                    System.out.print("Enter Book Name to Search: ");
                    String searchBook = sc.nextLine();

                    lib.searchBook(searchBook);
                    break;

                case 3:

                    System.out.print("Enter Book Name to Delete: ");
                    String deleteBook = sc.nextLine();

                    lib.deleteBook(deleteBook);
                    break;

                case 4:

                    lib.displayBooks();
                    break;

                case 5:

                    System.out.println("Thank You for Using Library Management System");
                    break;

                default:

                    System.out.println("Invalid Choice");
            }

        } while (choice != 5);

        sc.close();
    }
}