diff --git a/Code/ost/JAVA-FX-PROJECT/_javafx_website_task/src/main/java/com/example/CartController.java b/Code/ost/JAVA-FX-PROJECT/_javafx_website_task/src/main/java/com/example/CartController.java
index 2a2bd49..1aceb3a 100644
--- a/Code/ost/JAVA-FX-PROJECT/_javafx_website_task/src/main/java/com/example/CartController.java
+++ b/Code/ost/JAVA-FX-PROJECT/_javafx_website_task/src/main/java/com/example/CartController.java
@@ -71,21 +71,13 @@ public class CartController {
     }
 
     @FXML
-    private void handleCartButton(ActionEvent event) {
-        try {
-            App.setRoot("cart");
-        } catch (IOException e) {
-            e.printStackTrace();
-        }
+    private void handleCartButton() throws IOException {
+        App.setRoot("cart");
     }
 
     @FXML
-    private void handleLoginButton(ActionEvent event) {
-        try {
-            App.setRoot("login");
-        } catch (IOException e) {
-            e.printStackTrace();
-        }
+    private void handleLoginButton() throws IOException {
+        App.setRoot("login");
     }
 
     @FXML
diff --git a/Code/ost/JAVA-FX-PROJECT/_javafx_website_task/src/main/java/com/example/CheckOutController.java b/Code/ost/JAVA-FX-PROJECT/_javafx_website_task/src/main/java/com/example/CheckOutController.java
index 31c50b4..15957a5 100644
--- a/Code/ost/JAVA-FX-PROJECT/_javafx_website_task/src/main/java/com/example/CheckOutController.java
+++ b/Code/ost/JAVA-FX-PROJECT/_javafx_website_task/src/main/java/com/example/CheckOutController.java
@@ -1,5 +1,7 @@
 package com.example;
 
+import java.io.IOException;
+
 import javafx.event.ActionEvent;
 import javafx.fxml.FXML;
 import javafx.scene.control.*;
@@ -70,22 +72,19 @@ public class CheckOutController {
     }
 
     @FXML
-    private void handleCartButton(ActionEvent event) {
-        System.out.println("Cart button clicked.");
-        // Logic to navigate to the cart page
+    private void handleCartButton() throws IOException {
+        App.setRoot("cart");
     }
 
     @FXML
-    private void handleLoginButton(ActionEvent event) {
-        System.out.println("Login button clicked.");
-        // Logic to navigate to the login page
+    private void handleLoginButton() throws IOException {
+        App.setRoot("login");
     }
 
     @FXML
     private void handlePaymentMethod(ActionEvent event) {
         Button clickedButton = (Button) event.getSource();
         System.out.println("Selected payment method: " + clickedButton.getId());
-        // Highlight the selected payment method or save the selection
     }
 
     @FXML
diff --git a/Code/ost/JAVA-FX-PROJECT/_javafx_website_task/src/main/java/com/example/LoginController.java b/Code/ost/JAVA-FX-PROJECT/_javafx_website_task/src/main/java/com/example/LoginController.java
index f37b480..241c026 100644
--- a/Code/ost/JAVA-FX-PROJECT/_javafx_website_task/src/main/java/com/example/LoginController.java
+++ b/Code/ost/JAVA-FX-PROJECT/_javafx_website_task/src/main/java/com/example/LoginController.java
@@ -1,5 +1,7 @@
 package com.example;
 
+import java.io.IOException;
+
 import javafx.fxml.FXML;
 import javafx.scene.control.Button;
 import javafx.scene.control.Label;
@@ -31,9 +33,8 @@ public class LoginController {
     private Label footerCopyText;
 
     @FXML
-    private void handleCartButtonClick(MouseEvent event) {
-        System.out.println("Cart button clicked.");
-        // Logic to navigate to the cart page
+    private void handleCartButton() throws IOException {
+        App.setRoot("cart");
     }
 
     @FXML
diff --git a/Code/ost/JAVA-FX-PROJECT/_javafx_website_task/src/main/java/com/example/RegisterController.java b/Code/ost/JAVA-FX-PROJECT/_javafx_website_task/src/main/java/com/example/RegisterController.java
index dbfe841..b34a571 100644
--- a/Code/ost/JAVA-FX-PROJECT/_javafx_website_task/src/main/java/com/example/RegisterController.java
+++ b/Code/ost/JAVA-FX-PROJECT/_javafx_website_task/src/main/java/com/example/RegisterController.java
@@ -1,5 +1,7 @@
 package com.example;
 
+import java.io.IOException;
+
 import javafx.fxml.FXML;
 import javafx.scene.control.Button;
 import javafx.scene.control.Label;
@@ -45,15 +47,13 @@ public class RegisterController {
     private Label footerCopyText;
 
     @FXML
-    private void handleCartButtonClick(MouseEvent event) {
-        System.out.println("Cart button clicked.");
-        // Logic to navigate to the cart page
+    private void handleCartButton() throws IOException {
+        App.setRoot("cart");
     }
 
     @FXML
-    private void handleLoginButtonClick(MouseEvent event) {
-        System.out.println("Login button clicked.");
-        // Logic to navigate to the login page
+    private void handleLoginButton() throws IOException {
+        App.setRoot("login");
     }
 
     @FXML
diff --git a/Code/ost/JAVA-FX-PROJECT/_javafx_website_task/target/classes/com/example/CartController.class b/Code/ost/JAVA-FX-PROJECT/_javafx_website_task/target/classes/com/example/CartController.class
index 955fa45..69a1b6a 100644
Binary files a/Code/ost/JAVA-FX-PROJECT/_javafx_website_task/target/classes/com/example/CartController.class and b/Code/ost/JAVA-FX-PROJECT/_javafx_website_task/target/classes/com/example/CartController.class differ
diff --git a/Code/ost/JAVA-FX-PROJECT/_javafx_website_task/target/classes/com/example/CheckOutController.class b/Code/ost/JAVA-FX-PROJECT/_javafx_website_task/target/classes/com/example/CheckOutController.class
index 523b9b9..e3d64ed 100644
Binary files a/Code/ost/JAVA-FX-PROJECT/_javafx_website_task/target/classes/com/example/CheckOutController.class and b/Code/ost/JAVA-FX-PROJECT/_javafx_website_task/target/classes/com/example/CheckOutController.class differ
diff --git a/Code/ost/JAVA-FX-PROJECT/_javafx_website_task/target/classes/com/example/LoginController.class b/Code/ost/JAVA-FX-PROJECT/_javafx_website_task/target/classes/com/example/LoginController.class
index f55da48..307bf73 100644
Binary files a/Code/ost/JAVA-FX-PROJECT/_javafx_website_task/target/classes/com/example/LoginController.class and b/Code/ost/JAVA-FX-PROJECT/_javafx_website_task/target/classes/com/example/LoginController.class differ
diff --git a/Code/ost/JAVA-FX-PROJECT/_javafx_website_task/target/classes/com/example/RegisterController.class b/Code/ost/JAVA-FX-PROJECT/_javafx_website_task/target/classes/com/example/RegisterController.class
index b0dc5db..3438549 100644
Binary files a/Code/ost/JAVA-FX-PROJECT/_javafx_website_task/target/classes/com/example/RegisterController.class and b/Code/ost/JAVA-FX-PROJECT/_javafx_website_task/target/classes/com/example/RegisterController.class differ