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

public class LibrarySystem {

    private static ArrayList<Book> books = new ArrayList<>();
    private static Scanner scanner = new Scanner(System.in);

    public static void main(String[] args) {
        while (true) {
            displayMenu();
            int choice = scanner.nextInt();
            scanner.nextLine(); // Consume the newline character

            switch (choice) {
                case 1:
                    addBook();
                    break;
                case 2:
                    viewBookList();
                    break;
                case 3:
                    searchBook();
                    break;
                case 4:
                    System.out.println("Exiting program. Goodbye!");
                    System.exit(0);
                default:
                    System.out.println("Invalid choice. Please try again.");
            }
        }
    }

    private static void displayMenu() {
        System.out.println("Library System Menu:");
        System.out.println("1. Add Book");
        System.out.println("2. View Book List");
        System.out.println("3. Search for Book");
        System.out.println("4. Exit");
        System.out.print("Enter your choice: ");
    }

    private static void addBook() {
        System.out.print("Enter book title: ");
        String title = scanner.nextLine();

        System.out.print("Enter author: ");
        String author = scanner.nextLine();

        books.add(new Book(title, author));
        System.out.println("Book added successfully!");
    }

    private static void viewBookList() {
        if (books.isEmpty()) {
            System.out.println("No books in the library yet.");
        } else {
            System.out.println("Book List:");
            for (Book book : books) {
                System.out.println("Title: " + book.getTitle() + ", Author: " + book.getAuthor());
            }
        }
    }

    private static void searchBook() {
        System.out.print("Enter book title to search: ");
        String searchTitle = scanner.nextLine();

        boolean found = false;
        for (Book book : books) {
            if (book.getTitle().equalsIgnoreCase(searchTitle)) {
                System.out.println("Book found: Title: " + book.getTitle() + ", Author: " + book.getAuthor());
                found = true;
                break;
            }
        }

        if (!found) {
            System.out.println("Book with title '" + searchTitle + "' not found.");
        }
    }

    private static class Book {
        private String title;
        private String author;

        public Book(String title, String author) {
            this.title = title;
            this.author = author;
        }

        public String getTitle() {
            return title;
        }

        public String getAuthor() {
            return author;
        }
    }
}