Full screen frame issue

Question

I have this code, which basically initializes a new JFrame and sets it full screen

public class FullScreenFrameTest extends JFrame {

    public FullScreenFrameTest() {
        super();
        initFrame();
        setVisible(true);

        //full screen
        GraphicsEnvironment env = GraphicsEnvironment.getLocalGraphicsEnvironment();
        GraphicsDevice device = env.getDefaultScreenDevice();
        device.setFullScreenWindow(this);
        //end full screen
    }

    public void initFrame() {
        Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setUndecorated(true);
        setLocation(0, 0); //tried removing this, still doesn't work
        setSize(screen.width, screen.height);
    }

    public static void main(String[] args) {
        try {
            UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
        } catch (Exception e) {
        }
        new FullScreenFrameTest();
    }
}

The problem is that it sometimes it does work and sometimes it doesn't, especially with Ubuntu: sometimes i see it full screen, sometimes the two bars are shown. What am i missing?

UPDATE

There is a screenshot:

Screenshot

[`invokeLater()`](http://docs.oracle.com/javase/tutorial/uiswing/concurrency/initial.html)? — Catalina Island, Jun 27 '13 at 09:57
1) Java GUIs should be created and updated on the EDT. See [Concurrency in Swing](http://docs.oracle.com/javase/tutorial/uiswing/concurrency/) for more details. 2) See also [`Frame.setExtendedState(int)`](http://docs.oracle.com/javase/7/docs/api/java/awt/Frame.html#setExtendedState%28int%29). — Andrew Thompson, Jun 27 '13 at 09:59

Catalina Island · Answer 1 · 2013-06-27T10:43:08.283

2

Make sure to build your GUI on the event dispatch thread with invokeLater().

Update: Here's an SSCCE that seems to work consistently.

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

public class FullScreenFrameTest extends JFrame {

    public FullScreenFrameTest() {
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setUndecorated(true);
        add(new JLabel("Test", JLabel.CENTER));
        GraphicsEnvironment env =
            GraphicsEnvironment.getLocalGraphicsEnvironment();
        GraphicsDevice device = env.getDefaultScreenDevice();
        device.setFullScreenWindow(this);
        setVisible(true);
    }

    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                new FullScreenFrameTest();
            }
        });
    }
}

edited Jun 27 '13 at 10:43

answered Jun 27 '13 at 10:06

Catalina Island

7,027
2
23
42

Even with `setExtendedState()`? – Catalina Island Jun 27 '13 at 10:11
Yes, also with `setExtendedState(JFrame.MAXIMIZED_BOTH)` – BackSlash Jun 27 '13 at 10:13
`FUllScreenFrameTest` vs. `FullScreenFrameTest`? `TantaBellaRoba` not included in `invokeLater()`? – Catalina Island Jun 27 '13 at 10:15
Also make `setVisible` last. – Catalina Island Jun 27 '13 at 10:20
Also your last update doesn't work. But, if i place `setVisible(true)` **before** `GraphicsEnvironment env = GraphicsEnvironment.getLocalGraphicsEnvironment();` it works the first time, if i close the application and reopen it, it doesn't work – BackSlash Jun 27 '13 at 10:46
Work's for me on Ubuntu 12.04.2 LTS, Java 1.6.0_27. – trashgod Jun 27 '13 at 11:33

Vishal K · Answer 2 · 2017-08-14T10:09:43.757

1

Change

setLocation(0, 0); //tried removing this, still doesn't work
setSize(screen.width, screen.height);

To

setExtendedState(java.awt.Frame.MAXIMIZED_BOTH);
setLocationRelativeTo(null);

And call FullScreenFrameTest() constructor within SwingUtilities.invokeLater.

UPDATE

This might be due to the bug in java run time environment. Here is the bug reported http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7057287
To know more about this issue look at HERE.
UPDATE
As last tryI would suggest you to use JFrame#setAlwaysOnTop(true)

edited Aug 14 '17 at 10:09

answered Jun 27 '13 at 10:02

Vishal K

12,976
2
27
38

Have you tried my update? You are referring to that bar which is shown in right hand side of screen? – Vishal K Jun 27 '13 at 10:26
THe right one and also the top one, i want a full screen undecorated window, so none of the bars should be visible while my application is in fullscreen mode – BackSlash Jun 27 '13 at 10:29
`GraphicsDevice#isFullScreenSupported()` is returning true in your application? – Vishal K Jun 27 '13 at 10:57
I'm using jdk1.7u25, by the way i'm not using KDE, i'm using Unity – BackSlash Jun 27 '13 at 11:16
Have you seen the link to stackoverflow that i sent you? It explained the reason..And in some answer it is also mentioned that it is not not working for unity also. – Vishal K Jun 27 '13 at 11:25

Full screen frame issue

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