Show JFrame in a specific screen in dual monitor configuration

Question

I have a dual monitor config and I want to run my GUI in a specific monitor if it is found. I tried to create my JFrame window passing a GraphicConfiguration object of my screen device, but it doesn't work, frame still display on the main screen.

How can I set the screen where my frame must be displayed?

Answer 1

public static void showOnScreen( int screen, JFrame frame ) {     GraphicsEnvironment ge = GraphicsEnvironment         .getLocalGraphicsEnvironment();     GraphicsDevice[] gs = ge.getScreenDevices();     if( screen > -1 && screen < gs.length )     {         gs[screen].setFullScreenWindow( frame );     }     else if( gs.length > 0 )     {         gs[0].setFullScreenWindow( frame );     }     else     {         throw new RuntimeException( "No Screens Found" );     } } 

Answer 2

I have modified @Joseph-gordon's answer to allow for a way to achieve this without forcing full-screen:

public static void showOnScreen( int screen, JFrame frame ) {     GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();     GraphicsDevice[] gd = ge.getScreenDevices();     if( screen > -1 && screen < gd.length ) {         frame.setLocation(gd[screen].getDefaultConfiguration().getBounds().x, frame.getY());     } else if( gd.length > 0 ) {         frame.setLocation(gd[0].getDefaultConfiguration().getBounds().x, frame.getY());     } else {         throw new RuntimeException( "No Screens Found" );     } } 

In this code I am assuming getDefaultConfiguration() will never return null. If that is not the case then someone please correct me. But, this code works to move your JFrame to the desired screen.