Java Tips - How to retrieve and print the graphic device information

This Java Swing tip illustrates a quick utility to print out graphic device information. This tip will work on systems with multiple monitors. Developers may note that each GraphicsDevice has a number of GraphicsConfiguration objects associated with it. These objects specify different configurations in which the GraphicsDevice can be used.


import java.awt.*;

import javax.swing.*;



public class GuiScreens {

    public static void main(String[] args) {

        

        Rectangle virtualBounds = new Rectangle();

        

        GraphicsEnvironment ge = 

                GraphicsEnvironment.getLocalGraphicsEnvironment();

        

        GraphicsDevice[] gs = ge.getScreenDevices();

        JFrame frame[][] = new JFrame[gs.length][];

        

        for (int j = 0; j < gs.length; j++) {

            GraphicsDevice gd = gs[j];

            System.out.println("Device " + j + ": " + gd);

            GraphicsConfiguration[] gc = gd.getConfigurations();

            frame[j] = new JFrame[gc.length];

            

            for (int i=0; i < gc.length; i++) {

                System.out.println("  Configuration " + i + ": " + gc[i]);

                System.out.println("    Bounds: " + gc[i].getBounds());

                virtualBounds = virtualBounds.union(gc[i].getBounds());

                frame[j][i] = new JFrame("Config: " + i, gc[i]);

                frame[j][i].setBounds(50, 50, 400, 100);

                frame[j][i].setLocation(

                        (int)gc[i].getBounds().getX() + 50,

                        (int)gc[i].getBounds().getY() + 50);

                

                frame[j][i].getContentPane().add(

                        new JTextArea("Config:\n" + gc[i]));

                

                frame[j][i].setVisible(true);

            }

            System.out.println("Overall bounds: " + virtualBounds);

        }

    }

}

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