LibaryManagementService.java

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

public class LibaryManagementService {
    List<Book> books = new ArrayList<>();
    Scanner sc = new Scanner(System.in);

    public void addBook() {
        try {

            System.out.print("Enter Id: ");
            int id = sc.nextInt();
            sc.nextLine();

            System.out.print("Enter Title: ");
            String title = sc.nextLine();

            System.out.print("Enter Author Name: ");
            String author = sc.nextLine();

            Book b = new Book(id, title, author);
            books.add(b);
            System.out.println("Book Added Successfully..!");
            System.out.println();

        } catch (Exception e) {
            System.out.println(e.getMessage() + " Try Again..");
        }

    }

    public void displayBook() {
        if (books.isEmpty()) {
            System.out.println("No Book Added Yet..!");

        } else {
            System.out.println("Books List: ");

            for (Book b : books) {

                System.out.println("Id:" + b.getId() + " Title:" + b.getTitle() + " Auther Name:" + b.getAutherName());

            }
            System.out.println();
        }

    }

    public void removeBook() {
        if (books.isEmpty()) {
            System.out.println("No Book Added Yet..!");
            System.out.println();
            return;

        }

        try {
            System.out.println("Enter id to remove: ");
            int id = sc.nextInt();
            for (Book b : books) {

                if (b.getId() == id) {
                    books.remove(b);
                    System.out.println("Book removed successfully..!");
                    System.out.println();
                    return;

                }
                System.out.println("Id not found");
            }
        } catch (Exception e) {
            if (books.isEmpty()) {

            } else {
                System.out.println("Book removed successfully..!");
                System.out.println();

            }

        }
    }

    public void exit() {
        System.out.println();
        System.out.println("                              Thank You..!");
        System.out.println("********************************* Bye *********************************");

    }
}