How to display a frame at the upper left corner of each screen?

Question

hi,
below are 2 ways to display a frame at the upper left corner of each screen (i have 2 monitors).
both work but the 2nd way is much slower. which, if any, of the 2 approaches is "more" correct?
import java.awt.Canvas;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.DisplayMode;
import java.awt.event.MouseListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseAdapter;
import java.awt.GraphicsConfiguration;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.Toolkit;
import javax.swing.JFrame;
import javax.swing.JPanel;
// the thing that matters in here is setting the frame's location: xCoord
// is incremented in each iteration by the current screen's width and
// is used to set the frame's x-coordinate.
public static void main(String args[])
      GraphicsEnvironment gEnviron = GraphicsEnvironment.getLocalGraphicsEnvironment();
      GraphicsDevice[]    gDevices = gEnviron.getScreenDevices();
      Color colors[] = {Color.blue, Color.red};
      for(int i = 0, xCoord = 0; i < gDevices.length; i++)
         // set panel's size and frame's size to take up the whole screen
         DisplayMode didsplayMode = gDevices.getDisplayMode();
int screenWidth = didsplayMode.getWidth();
int screenHeight = didsplayMode.getHeight();
JPanel panel = new JPanel();
panel.setBackground(colors[i % colors.length]);
JFrame frame = new JFrame();
frame.setSize(new Dimension(screenWidth, screenHeight));
frame.setContentPane(panel);
frame.setUndecorated(true);
// set location of frame.
frame.setLocation(xCoord, 0);
xCoord += screenWidth;
frame.addMouseListener
new MouseAdapter()
public void mousePressed(MouseEvent event) {System.exit(1);}
frame.setVisible(true);
// this is a lot slower and may not be correct: it sets the frame's location by calling
// getConfigurations() on each screen device but using only the 1st configuration
// (it returns 6 on my computer) to get the bounds (for the frame's x-coord).
// a screen device has 1 or more configuration objects but do all the objects
// of the device report the same bounds? if the anwser is yes, then the code
// is correct, but i'm not sure.
public static void main1(String args[])
GraphicsEnvironment gEnviron = GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice[] gDevices = gEnviron.getScreenDevices();
Color colors[] = {Color.blue, Color.red};
for(int i = 0; i < gDevices.length; i++)
// set panel's size and frame's size to take up the whole screen
DisplayMode didsplayMode = gDevices[i].getDisplayMode();
int screenWidth = didsplayMode.getWidth();
int screenHeight = didsplayMode.getHeight();
JPanel panel = new JPanel();
panel.setBackground(colors[i % colors.length]);
JFrame frame = new JFrame();
frame.setSize(new Dimension(screenWidth, screenHeight));
frame.setContentPane(panel);
frame.setUndecorated(true);
// set location of frame: getConfigurations() is very time consuming
GraphicsConfiguration[] gConfig = gDevices[i].getConfigurations();
// on my computer: gConfig.length == 6. using the 1st from each set of configs
Rectangle gConfigBounds = gConfig[0].getBounds();
frame.setLocation(gConfigBounds.x, gConfigBounds.y);
frame.addMouseListener
new MouseAdapter()
public void mousePressed(MouseEvent event) {System.exit(1);}
frame.setVisible(true);
thank you.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       

Answer 1

Darryl.Burke wrote:
Blocked one abusive post.
@flounder
Please watch your language.
dbDude - I just looked at your profile. WTF are you doing in India??