JavaFX Overview

📥 What is JavaFX?

• JavaFX is a modern GUI framework for Java used to build rich desktop applications.

• It is the successor to Swing and offers features like hardware-accelerated graphics, CSS styling, FXML for UI design, and media support.

🔧 Core Features

• Scene Graph Architecture

  ➤ Organizes UI components in a tree-like structure (called a scene graph).

• FXML Support

  ➤ XML-based language used to design the UI separately from logic (similar to HTML + JS approach).

• CSS Styling

  ➤ JavaFX allows UI components to be styled using CSS, improving maintainability and design.

• Media Integration

  ➤ Built-in support for audio, video, and web content.

• 3D Graphics & Effects

  ➤ Supports 2D and 3D shapes, animations, shadows, and more.

🧱 JavaFX Components

• Stage

  ➤ Represents the main window.

• Scene

  ➤ Container for all content in the Stage.

• Nodes

  ➤ UI elements like Button, Label, TextField, etc.

• Layouts (Panes)

  ➤ Containers like VBox, HBox, BorderPane, GridPane, used for arranging nodes.

🔄 JavaFX Lifecycle

1. Launch Application → Using Application.launch()

2. Start Method → Override start(Stage primaryStage)

3. Build UI → Create layout, components, and assign to a Scene

4. Display Stage → Use stage.show() to render the window

🎨 Styling with CSS

• JavaFX allows external or inline CSS styling:

  • Example: fx-background-color: lightblue;

• Keeps design and logic separate.

💡 Benefits Over Swing

✅ When to Use JavaFX?

• Ideal for modern desktop apps, UI prototyping, cross-platform GUIs, or apps needing media & animation support.