Patrick help me

Code/ost/JAVA-FX-PROJECT/_javafx_website_task/src/main/java/com/example/CartController.java

@@ -10,18 +10,16 @@ import javafx.scene.control.TableColumn;
 import javafx.scene.control.TableView;
 import javafx.scene.control.cell.PropertyValueFactory;
 
+import java.io.BufferedReader;
+import java.io.FileReader;
 import java.io.IOException;
 
 public class CartController {
 
-    @FXML
-    private Button cartBtn;
+    private static final String CART_FILE = "cart.txt";
 
     @FXML
-    private Button loginBtn;
-
-    @FXML
-    private Button btnCheckOut;
+    private Button cartBtn, loginBtn, btnCheckOut;
 
     @FXML
     private TableView<Item> cartContent;
@@ -39,15 +37,11 @@ public class CartController {
     private TableColumn<Item, Double> priceColumn;
 
     @FXML
-    private Label cartTitle;
-
-    @FXML
-    private Label mainTitle;
+    private Label cartTitle, mainTitle;
 
     // Observable list to hold cart items
     private final ObservableList<Item> cartItems = FXCollections.observableArrayList();
 
-    // Initialize method to set up the TableView
     @FXML
     public void initialize() {
         // Set up columns to match Item properties
@@ -56,16 +50,27 @@ public class CartController {
         quantityColumn.setCellValueFactory(new PropertyValueFactory<>("quantity"));
         priceColumn.setCellValueFactory(new PropertyValueFactory<>("price"));
 
-        // Populate the cart table with sample data for demonstration
-        cartItems.addAll(
-                new Item("Book A", "A fascinating fantasy novel.", 1, 12.99),
-                new Item("Book B", "A thrilling sequel.", 2, 10.50));
+        // Load cart items from file
+        loadCartItemsFromFile();
+
+        // Populate TableView with cart items
         cartContent.setItems(cartItems);
     }
 
+    private void loadCartItemsFromFile() {
+        try (BufferedReader reader = new BufferedReader(new FileReader(CART_FILE))) {
+            String line;
+            while ((line = reader.readLine()) != null) {
+                // Assuming each line contains only the book name for simplicity
+                cartItems.add(new Item(line, "Book Description", 1, 9.99));
+            }
+        } catch (IOException e) {
+            System.err.println("Error loading cart items: " + e.getMessage());
+        }
+    }
+
     @FXML
     private void handleCartButton(ActionEvent event) {
-        System.out.println("Cart button clicked!");
         try {
             App.setRoot("cart");
         } catch (IOException e) {
@@ -75,7 +80,6 @@ public class CartController {
 
     @FXML
     private void handleLoginButton(ActionEvent event) {
-        System.out.println("Login button clicked!");
         try {
             App.setRoot("login");
         } catch (IOException e) {
@@ -92,7 +96,7 @@ public class CartController {
 
         System.out.println("Proceeding to checkout...");
         try {
-            App.setRoot("checkout");
+            App.setRoot("checkOut");
         } catch (IOException e) {
             e.printStackTrace();
         }

Code/ost/JAVA-FX-PROJECT/_javafx_website_task/src/main/java/com/example/CheckOutController.java

@@ -110,7 +110,6 @@ public class CheckOutController {
             System.out.println("Form submitted successfully.");
             System.out.printf("Billing Info: %s, %s, %s, %s, %s\n", fullName, address, city, zip, country);
             System.out.printf("Credit Card Info: %s, %s, %s, CVV: %s\n", cardNumber, cardHolderName, expiryDate, cvv);
-            // Process the payment here
         }
     }
 }

Code/ost/JAVA-FX-PROJECT/_javafx_website_task/src/main/java/com/example/Item.java

@@ -1,23 +1,30 @@
 package com.example;
 
+import java.util.Objects;
+
 public class Item {
     private String name;
     private String description;
     private int quantity;
     private double price;
 
+    // Constructor
     public Item(String name, String description, int quantity, double price) {
-        this.name = name;
-        this.description = description;
-        this.quantity = quantity;
-        this.price = price;
+        setName(name);
+        setDescription(description);
+        setQuantity(quantity);
+        setPrice(price);
     }
 
+    // Getters and Setters
     public String getName() {
         return name;
     }
 
     public void setName(String name) {
+        if (name == null || name.trim().isEmpty()) {
+            throw new IllegalArgumentException("Item name cannot be null or empty");
+        }
         this.name = name;
     }
 
@@ -26,6 +33,9 @@ public class Item {
     }
 
     public void setDescription(String description) {
+        if (description == null || description.trim().isEmpty()) {
+            throw new IllegalArgumentException("Description cannot be null or empty");
+        }
         this.description = description;
     }
 
@@ -34,6 +44,9 @@ public class Item {
     }
 
     public void setQuantity(int quantity) {
+        if (quantity < 0) {
+            throw new IllegalArgumentException("Quantity cannot be negative");
+        }
         this.quantity = quantity;
     }
 
@@ -42,6 +55,33 @@ public class Item {
     }
 
     public void setPrice(double price) {
+        if (price < 0) {
+            throw new IllegalArgumentException("Price cannot be negative");
+        }
         this.price = price;
     }
-}
+
+    // Override equals and hashCode for object comparison
+    @Override
+    public boolean equals(Object o) {
+        if (this == o)
+            return true;
+        if (o == null || getClass() != o.getClass())
+            return false;
+        Item item = (Item) o;
+        return Objects.equals(name, item.name) &&
+                Objects.equals(description, item.description);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(name, description);
+    }
+
+    // Override toString for better debugging and UI representation
+    @Override
+    public String toString() {
+        return String.format("Item{name='%s', description='%s', quantity=%d, price=%.2f}",
+                name, description, quantity, price);
+    }
+}

Code/ost/JAVA-FX-PROJECT/_javafx_website_task/src/main/java/com/example/ShopController.java

@@ -1,7 +1,8 @@
 package com.example;
 
+import java.io.BufferedWriter;
+import java.io.FileWriter;
 import java.io.IOException;
-
 import javafx.fxml.FXML;
 import javafx.scene.control.Button;
 import javafx.scene.control.Label;
@@ -9,6 +10,8 @@ import javafx.scene.control.TextArea;
 
 public class ShopController {
 
+    private static final String CART_FILE = "cart.txt";
+
     @FXML
     private Button cartBtn;
 
@@ -16,59 +19,20 @@ public class ShopController {
     private Button loginBtn;
 
     @FXML
-    private Button cardBtn1;
-
+    private Button cardBtn1, cardBtn2, cardBtn3, cardBtn4;
     @FXML
-    private Button cardBtn2;
-
-    @FXML
-    private Button cardBtn3;
-
-    @FXML
-    private Button cardBtn4;
-
-    @FXML
-    private Button cardBtn5;
-
-    @FXML
-    private Button cardBtn6;
-
-    @FXML
-    private Button cardBtn7;
-
-    @FXML
-    private Button cardBtn8;
+    private Button cardBtn5, cardBtn6, cardBtn7, cardBtn8;
 
     @FXML
     private Label mainTitle;
 
     @FXML
-    private TextArea cardText1;
-
+    private TextArea cardText1, cardText2, cardText3, cardText4;
     @FXML
-    private TextArea cardText2;
-
-    @FXML
-    private TextArea cardText3;
-
-    @FXML
-    private TextArea cardText4;
-
-    @FXML
-    private TextArea cardText5;
-
-    @FXML
-    private TextArea cardText6;
-
-    @FXML
-    private TextArea cardText7;
-
-    @FXML
-    private TextArea cardText8;
+    private TextArea cardText5, cardText6, cardText7, cardText8;
 
     @FXML
     public void initialize() {
-        // Initialization logic can go here.
         System.out.println("ShopController initialized.");
     }
 
@@ -82,51 +46,59 @@ public class ShopController {
         App.setRoot("login");
     }
 
+    // Book Addition Handlers
     @FXML
     private void handleAddToCartButton1() {
-        System.out.println("Added 'Lord of the Rings' to cart!");
-        // Logic for adding the first book to the cart.
+        addToCart("Lord of the Rings");
     }
 
     @FXML
     private void handleAddToCartButton2() {
-        System.out.println("Added 'The Wheel of Time' to cart!");
-        // Logic for adding the second book to the cart.
+        addToCart("The Wheel of Time");
     }
 
     @FXML
     private void handleAddToCartButton3() {
-        System.out.println("Added 'The Chronicles of Narnia' to cart!");
-        // Logic for adding the third book to the cart.
+        addToCart("The Chronicles of Narnia");
     }
 
     @FXML
     private void handleAddToCartButton4() {
-        System.out.println("Added 'The Earthsea Cycle' to cart!");
-        // Logic for adding the fourth book to the cart.
+        addToCart("The Earthsea Cycle");
     }
 
     @FXML
     private void handleAddToCartButton5() {
-        System.out.println("Added 'The First Law Trilogy' to cart!");
-        // Logic for adding the fifth book to the cart.
+        addToCart("The First Law Trilogy");
     }
 
     @FXML
     private void handleAddToCartButton6() {
-        System.out.println("Added 'The Kingkiller Chronicle' to cart!");
-        // Logic for adding the sixth book to the cart.
+        addToCart("The Kingkiller Chronicle");
     }
 
     @FXML
     private void handleAddToCartButton7() {
-        System.out.println("Added 'The Mistborn Series' to cart!");
-        // Logic for adding the seventh book to the cart.
+        addToCart("The Mistborn Series");
     }
 
     @FXML
     private void handleAddToCartButton8() {
-        System.out.println("Added 'The Stormlight Archive' to cart!");
-        // Logic for adding the eighth book to the cart.
+        addToCart("The Stormlight Archive");
+    }
+
+    /**
+     * Adds the specified item to the cart by appending it to the cart file.
+     *
+     * @param bookTitle the title of the book to add to the cart
+     */
+    private void addToCart(String bookTitle) {
+        try (BufferedWriter writer = new BufferedWriter(new FileWriter(CART_FILE, true))) {
+            writer.write(bookTitle);
+            writer.newLine();
+            System.out.println("Added to cart: " + bookTitle);
+        } catch (IOException e) {
+            System.err.println("Failed to add item to cart: " + e.getMessage());
+        }
     }
 }