OOPS example for Online Book Store in Java

Object Oriented Programming/Online_Bookstore/Main.java

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+import java.util.ArrayList;
+import java.util.List;
+
+class Book {
+    private String title;
+    private String author;
+    private double price;
+
+    public Book(String title, String author, double price) {
+        this.title = title;
+        this.author = author;
+        this.price = price;
+    }
+
+    public void displayInfo() {
+        System.out.println("Title: " + title);
+        System.out.println("Author: " + author);
+        System.out.printf("Price: $%.2f%n%n", price);
+    }
+
+    public double getPrice() {
+        return price;
+    }
+}
+
+class Customer {
+    private String name;
+    private String email;
+
+    public Customer(String name, String email) {
+        this.name = name;
+        this.email = email;
+    }
+
+    public void displayInfo() {
+        System.out.println("Name: " + name);
+        System.out.println("Email: " + email);
+        System.out.println();
+    }
+}
+
+class Order {
+    private Customer customer;
+    private List<Book> books;
+    private double totalAmount;
+
+    public Order(Customer customer) {
+        this.customer = customer;
+        this.books = new ArrayList<>();
+        this.totalAmount = 0;
+    }
+
+    public void addBook(Book book) {
+        books.add(book);
+    }
+
+    public void calculateTotal() {
+        for (Book book : books) {
+            totalAmount += book.getPrice();
+        }
+    }
+
+    public void displayInfo() {
+        System.out.println("Order Details:");
+        customer.displayInfo();
+        System.out.println("Books in the Order:");
+        for (Book book : books) {
+            book.displayInfo();
+        }
+        System.out.printf("Total Amount: $%.2f%n", totalAmount);
+    }
+}
+
+public class Main {
+    public static void main(String[] args) {
+        // Create customer
+        Customer customer = new Customer("Alice", "[email protected]");
+
+        // Create books
+        Book book1 = new Book("The Great Gatsby", "F. Scott Fitzgerald", 12.99);
+        Book book2 = new Book("To Kill a Mockingbird", "Harper Lee", 9.99);
+
+        // Create an order and add books
+        Order order = new Order(customer);
+        order.addBook(book1);
+        order.addBook(book2);
+
+        // Calculate and display the order
+        order.calculateTotal();
+        order.displayInfo();
+    }
+}