JFrame in full screen Java

Question

I will be doing a project soon and I will have to use full screen mode in it   It will draw some graphics in the window  It would be convienient if I use JFrame or something similar    I don t know what the final resolution of the screen will be  Please tell me if the graphics will be automaticly rescaled   JFrame jf   new JFrame    jf setSize 1650 1080     make it fullscreen    now is everything is going to be rescaled so it looks like the original

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Values highlighted that I mean

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If you want put your frame in full-screen mode  like a movie in full-screen   check these answers    How can I do full screen in Java on OSX Java setFullScreenWindow   keep on top   The classes java awt GraphicsEnvironment and java awt GraphicsDevice are used for put an app in full-screen mode on the one screen  the dispositive    e g    static GraphicsDevice device   GraphicsEnvironment          getLocalGraphicsEnvironment   getScreenDevices   0    public static void main String   args         final JFrame frame   new JFrame  Display Mode        frame setDefaultCloseOperation WindowConstants EXIT ON CLOSE       frame setUndecorated true        JButton btn1   new JButton  Full-Screen        btn1 addActionListener new ActionListener              Override         public void actionPerformed ActionEvent e                device setFullScreenWindow frame                         JButton btn2   new JButton  Normal        btn2 addActionListener new ActionListener              Override         public void actionPerformed ActionEvent e                device setFullScreenWindow null                          JPanel panel   new JPanel new FlowLayout FlowLayout CENTER        panel add btn1       panel add btn2       frame add panel        frame pack        frame setVisible true

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it will helps you use your object instant of the frame  frame setExtendedState JFrame MAXIMIZED BOTH

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Set 2 properties below    extendedState   6 resizeable   true   It works for me

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First of all  that is the resolution you would want to use  1650 1080   Now add   frame setExtendedState JFrame MAXIMIZED BOTH      If you have issues with the components on the JFrame  then after you have added all the components using the frame add component  method  add the following statement   frame pack

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JFrame frame   new JFrame    frame setPreferredSize new Dimension Toolkit getDefaultToolkit   getScreenSize        This just makes the frame the size of the screen

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Easiest fix ever   for   Window w   Window getWindows           GraphicsEnvironment getLocalGraphicsEnvironment   getDefaultScreenDevice   setFullScreenWindow  w

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you can simply do like this - public void FullScreen             if  Build VERSION SDK INT  gt  11  amp  amp  Build VERSION SDK INT  lt  19                final View v   this activity getWindow   getDecorView                v setSystemUiVisibility 8                     else if  Build VERSION SDK INT  gt   19                final View decorView   this activity getWindow   getDecorView                final int uiOptions   4102              decorView setSystemUiVisibility uiOptions

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Just use this code     import java awt event    import javax swing     public class FullscreenJFrame extends JFrame       private JPanel contentPane   new JPanel        private JButton fullscreenButton   new JButton  Fullscreen Mode        private boolean Am I In FullScreen   false      private int PrevX  PrevY  PrevWidth  PrevHeight       public static void main String   args            FullscreenJFrame frame   new FullscreenJFrame            frame setDefaultCloseOperation JFrame EXIT ON CLOSE           frame setSize 600  500           frame setVisible true              public FullscreenJFrame             super  My FullscreenJFrame             setContentPane contentPane               From Here starts the trick         FullScreenEffect effect   new FullScreenEffect             fullscreenButton addActionListener effect            contentPane add fullscreenButton           fullscreenButton setVisible true              private class FullScreenEffect implements ActionListener            Override         public void actionPerformed ActionEvent arg0                if  Am I In FullScreen    false                    PrevX   getX                    PrevY   getY                    PrevWidth   getWidth                    PrevHeight   getHeight                        Destroys the whole JFrame but keeps organized every Component                    Needed if you want to use Undecorated JFrame dispose   is the                    reason that this trick doesn t work with videos                  dispose                    setUndecorated true                    setBounds 0  0  getToolkit   getScreenSize   width                          getToolkit   getScreenSize   height                   setVisible true                   Am I In FullScreen   true                else                   setVisible true                   setBounds PrevX  PrevY  PrevWidth  PrevHeight                   dispose                    setUndecorated false                   setVisible true                   Am I In FullScreen   false                                    I hope this helps

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Add   frame setExtendedState JFrame MAXIMIZED BOTH    frame setUndecorated true   frame setVisible true

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Use setExtendedState int state   where state would be JFrame MAXIMIZED BOTH

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You can use properties tool  Set 2 properties for your JFrame      extendedState 6 resizeable    true

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One way is to use the Extended State  This asks the underlying OS to maximize the JFrame   setExtendedState getExtendedState     JFrame MAXIMIZED BOTH     Other approach would be to manually maximize the screen for you requirement    Dimension dim   Toolkit getDefaultToolkit   getScreenSize    setBounds 100  100   int  dim getWidth     int  dim getHeight     setLocationRelativeTo null     But this has pitfalls in Ubuntu OS  The work around I found was this   if  SystemHelper isUnix          getContentPane   setPreferredSize      Toolkit getDefaultToolkit   getScreenSize         pack        setResizable false       show         SwingUtilities invokeLater new Runnable             public void run                 Point p   new Point 0  0               SwingUtilities convertPointToScreen p  getContentPane                 Point l   getLocation                l x -  p x              l y -  p y              setLocation p                        Dimension dim   Toolkit getDefaultToolkit   getScreenSize    setBounds 100  100   int  dim getWidth     int  dim getHeight     setLocationRelativeTo null     In Fedora the above problem is not present  But there are complications involved with Gnome or KDE  So better be careful  Hope this helps

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You only need this   JFrame frame   new JFrame    frame setExtendedState JFrame MAXIMIZED BOTH   frame setDefaultCloseOperation JFrame EXIT ON CLOSE   frame setVisible true     When you use the MAXIMIZED BOTH modifier  it will max all the way across the window  height and width    There are some that suggested using this   frame setUndecorated true     I won t recommend it  because your window won t have a header  thus no close restore minimize button

[java] JFrame in full screen Java

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