To make a window centered, we all need to set the location of window to center with respect to screen size.
There are following steps to make a window centered.
1. Get the screen size
2. Set the window/frame location by calculating it with screen size and frame size.
See the following example.
centerOnScreen Method provide the functionality to make a window centered.
import java.awt.BorderLayout; import java.awt.Dimension; import java.awt.Toolkit; import java.awt.Window; import javax.swing.JFrame; import javax.swing.JLabel; /** * * @author ujjwal soni
*
*/
public class CenteredFrameExample {
JFrame frame;
JLabel label;
public CenteredFrameExample() {
frame = new JFrame("Centered JFrame.");
label = new JLabel();
frame.setSize(250, 150);
frame.setPreferredSize(new Dimension(250, 150));
frame.getContentPane().add(BorderLayout.CENTER, label);
centerOnScreen(frame);
frame.setVisible(true);
frame.pack();
}
public static void main(String args[]) {
CenteredFrameExample centeredFrame = new CenteredFrameExample();
String text = "This is the centered frame... "; centeredFrame.label.setText(text); } /** * Centers a window on screen. * * @param w The window to center. */ public void centerOnScreen(Window w) { Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize(); w.setLocation(screenSize.width / 2 - (w.getWidth() / 2), screenSize.height / 2 - (w.getHeight() / 2)); } }Thats all for now....
Cheers!!!
Ujjwal Soni
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