java get monitor size

To get the size of the monitor (display) in Java, you can use the getScreenSize method of the Toolkit class.

Here is an example of how to get the size of the primary monitor:

Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
double width = screenSize.getWidth();
double height = screenSize.getHeight();

The getScreenSize method returns a Dimension object representing the size of the monitor, and the getWidth and getHeight methods return the width and height of the monitor, respectively. These values are returned in pixels.

If you want to get the size of a specific monitor, you can use the getScreenDevices method of the GraphicsEnvironment class to get an array of GraphicsDevice objects representing the available monitors, and then use the getDefaultConfiguration method of the GraphicsDevice class to get the GraphicsConfiguration object for each monitor. The getBounds method of the GraphicsConfiguration class returns a Rectangle object representing the bounds of the monitor, which you can then use to get the width and height.

Here is an example of how to get the size of the second monitor:

GraphicsDevice[] devices = GraphicsEnvironment.getLocalGraphicsEnvironment().getScreenDevices();
if (devices.length > 1) {
    Rectangle bounds = devices[1].getDefaultConfiguration().getBounds();
    double width = bounds.getWidth();
    double height = bounds.getHeight();
}