complete

src/main/java/workshop/Controller.java

@@ -1,6 +1,8 @@
 package workshop;
 
 import javafx.fxml.FXML;
+import javafx.scene.Scene;
+import javafx.scene.control.Alert;
 import javafx.scene.control.Label;
 import javafx.scene.control.Button;
 
@@ -16,26 +18,40 @@ public class Controller {
     // TODO: (Optional:For Practice) Make the plan price go 1 dollar up each time user clicks on the shop button.
     @FXML
     private void buyBasic() {
-        // TODO: Call showAlert() with a message indicating the user entered the payment gateway
+        showAlert("You are entering the payment gateway for the Basic plan ($9.99/month).");
     }
 
     @FXML
     private void buyPro() {
-        // TODO: Call showAlert() with a message indicating the user entered the payment gateway
+        showAlert("You are entering the payment gateway for the Pro plan ($19.99/month).");
     }
 
     @FXML
     private void buyEnterprise() {
-        // TODO: Call showAlert() with a message indicating the user entered the payment gateway
+        showAlert("Please contact our sales team to purchase the Enterprise plan.");
     }
 
     @FXML
     private void toggleTheme() {
-        // TODO: Toggle the isDark flag. If dark, switch to style.css and set button text to "Switch to Light Mode"
+        Scene scene = themeToggle.getScene();
-        // TODO: If light, switch to light.css and set button text to "Switch to Dark Mode"
+        scene.getStylesheets().clear();
+
+        if (isDark) {
+            scene.getStylesheets().add(getClass().getResource("light.css").toExternalForm());
+            themeToggle.setText("Switch to Light Mode");
+        }
+        else {
+            scene.getStylesheets().add(getClass().getResource("style.css").toExternalForm());
+            themeToggle.setText("Switch to Dark Mode");
+        }
+        isDark = !isDark;
     }
 
     private void showAlert(String message) {
-        // TODO: Create a new Alert of type INFORMATION with the given message and display it
+        Alert alert = new Alert(Alert.AlertType.INFORMATION);
+        alert.setTitle("Payment");
+        alert.setHeaderText(null);
+        alert.setContentText(message);
+        alert.showAndWait();
     }
 }

src/main/java/workshop/Launcher.java

@@ -4,6 +4,6 @@ import javafx.application.Application;
 
 public class Launcher {
     public static void main(String[] args) {
-        // TODO: Launch the JavaFX application by calling Application.launch(Main.class)
+        Application.launch(Main.class, args);
     }
 }

src/main/java/workshop/Main.java

@@ -1,13 +1,19 @@
 package workshop;
 
 import javafx.application.Application;
+import javafx.fxml.FXMLLoader;
+import javafx.scene.Parent;
+import javafx.scene.Scene;
 import javafx.stage.Stage;
 
 public class Main extends Application {
     @Override
     public void start(Stage stage) throws Exception {
-        // TODO: Load the FXML file using FXMLLoader.load() and get the Parent root
+        Parent root = FXMLLoader.load(getClass().getResource("pricing.fxml"));
-        // TODO: Create a Scene with the root (width=750, height=450) and add the stylesheet "style.css"
+        Scene scene = new Scene(root, 750, 450);
-        // TODO: Set the stage title to "Pricing Plans", set the scene, and call stage.show()
+        scene.getStylesheets().add(getClass().getResource("style.css").toExternalForm());
+        stage.setTitle("Pricing plans");
+        stage.setScene(scene);
+        stage.show();
     }
 }