Center On Screen : GUI Utilities « Swing JFC « Java

Center On Screen

 * Image/J Plugins
 * Copyright (C) 2002-2004 Jarek Sacha
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * Lesser General Public License for more details.
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 * Latest release available at

import java.awt.*;

 * @author Jarek Sacha
 * @version $Revision: 1.2 $
public class SwingUtils {
    public static void centerOnScreen(Window window, boolean packFrame) {
        //Validate frames that have preset sizes
        //Pack frames that have useful preferred size info, e.g. from their layout
        if (packFrame) {
        } else {

        //Center the frame window
        Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
        Dimension frameSize = window.getSize();

        if (frameSize.height > screenSize.height) {
            frameSize.height = screenSize.height;

        if (frameSize.width > screenSize.width) {
            frameSize.width = screenSize.width;

        window.setLocation((screenSize.width - frameSize.width) / 2,
                (screenSize.height - frameSize.height) / 2);



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