Java active displays

Window myWindow = ....
// ...
GraphicsConfiguration config = myWindow.getGraphicsConfiguration();
GraphicsDevice myScreen = config.getDevice();
GraphicsEnvironment env = GraphicsEnvironment.getLocalGraphicsEnvironment();
// AFAIK - there are no guarantees that screen devices are in order... 
// but they have been on every system I've used.
GraphicsDevice[] allScreens = env.getScreenDevices();
int myScreenIndex = -1;
for (int i = 0; i < allScreens.length; i++) {
    if (allScreens[i].equals(myScreen))
    {
        myScreenIndex = i;
        break;
    }
}
System.out.println("window is on screen" + myScreenIndex);

Source: stackoverflow.com

Java active displays

    public static GraphicsDevice getWindowDevice(Window window) {
    Rectangle bounds = window.getBounds();
    return asList(GraphicsEnvironment.getLocalGraphicsEnvironment().getScreenDevices()).stream()

            // pick devices where window located
            .filter(d -> d.getDefaultConfiguration().getBounds().intersects(bounds))

            // sort by biggest intersection square
            .sorted((f, s) -> Long.compare(//
                    square(f.getDefaultConfiguration().getBounds().intersection(bounds)),
                    square(s.getDefaultConfiguration().getBounds().intersection(bounds))))

            // use one with the biggest part of the window
            .reduce((f, s) -> s) //

            // fallback to default device
            .orElse(window.getGraphicsConfiguration().getDevice());
}

public static long square(Rectangle rec) {
    return Math.abs(rec.width * rec.height);
}

Source: stackoverflow.com

Similar codes

3 votes279 views1 answer
How to get all the names of the files in a folder in java?
Java
0 vote326 views1 answer
How to write a line in java
Java
0 vote290 views1 answer
How to change the tomcat port in spring boot
Java
1 vote314 views1 answer
Clear array java
Java
0 vote314 views1 answer
How to use another class in java inside of an action listenrer
Java
1 vote293 views3 answers
How to get time in dd/mm/yyyy format in java
Java
0 vote386 views1 answer
Spring boot return 201 created
Java Spring
-1 vote278 views1 answer
Java in 5 minutes
Java
136 votes472 views6 answers
Java random number
Java
0 vote298 views1 answer
Java.awt.datatransfer.clipboard example
Java