Solved: make javafx open full screen

make open full screen In today’s digital age, creating immersive user experiences is essential for keeping users engaged with your content. One popular way of achieving this is by displaying content in full screen, minimizing distractions, and making the most of the available screen space. In this article, we’ll discuss how to make an application display in full-screen mode using Java, a popular programming language known for its versatility and ability to run on various platforms.

To solve this problem, we’ll be using the Java Swing library, which provides a rich set of graphical user interface components. The process of making an application open in full screen mode involves creating a JFrame, setting the appropriate properties, and adding any desired components to the frame before making it visible. Let’s go through each step in detail, providing code snippets to help illustrate the process.

import javax.swing.JFrame;
import javax.swing.JLabel;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;

public class FullScreenExample {
    public static void main(String[] args) {
        JFrame frame = new JFrame("Full Screen Example");

        GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
        GraphicsDevice gd = ge.getDefaultScreenDevice();

        // Check if full-screen mode is supported
        if (gd.isFullScreenSupported()) {
        } else {
            System.out.println("Full-screen mode not supported");
            frame.setSize(500, 600);

        frame.add(new JLabel("Welcome to Full Screen Mode!"));


In the code above, we first import the necessary classes, and then create a `JFrame` object. We set the default close operation to `EXIT_ON_CLOSE`, which means the application will terminate when the user closes the window. We use the `GraphicsEnvironment` and `GraphicsDevice` classes to check if the user’s system supports full-screen mode. If it does, we set the frame to be undecorated and assign it to be the full-screen window. If the system does not support full-screen mode, we set the frame size and location manually. Finally, we add a label to the frame and set it to be visible.

Understanding Java Swing

Java Swing is a powerful library that provides a comprehensive set of components for building graphical user interfaces (GUIs). These components include buttons, text fields, menus, and more. Swing also supports advanced features like drag-and-drop, data binding, and internationalization.

The key components of Swing are `JComponent` and its subclasses, as well as various layout managers like BorderLayout, FlowLayout, and GridLayout. These managers control the arrangement and configuration of components within containers. Swing also has a rich event handling system, allowing developers to create interactive applications that respond to user actions like button clicks and keyboard input.

An Overview of Full Screen Mode

Full screen mode is a display mode that allows applications to occupy the entire screen area, hiding user interface elements like taskbars, menus, and title bars. It is particularly useful in multimedia applications, games, and presentations, where the user’s focus should be on the content and not on the surrounding interface elements.

To implement full screen mode in Java, we rely on the `GraphicsDevice` class, which provides methods for setting the display mode and the full-screen window. The `setFullScreenWindow()` method accepts a single parameter, a `Window` object (in our example, a JFrame), and sets it as the current full-screen window. If the user’s system doesn’t support full screen mode, we set the size and location of the window manually, ensuring that our application will display correctly even in unsupported environments.

By leveraging Java Swing and a few built-in methods, we can easily create immersive, full-screen applications that provide an engaging user experience.

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