Here you can find the source of centerPosition(JFrame invokerFrame, Window w, int width, int height)
public static void centerPosition(JFrame invokerFrame, Window w, int width, int height)
//package com.java2s; /**/* w w w.j a va 2s.co m*/ * Copyright (C) 2005 Bruno Patini Furtado * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software Foundation, * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * Created on 09/10/2005 21:49:53 */ import java.awt.Window; import javax.swing.JFrame; public class Main { public static void centerPosition(JFrame invokerFrame, Window w, int width, int height) { int x = invokerFrame.getX() + (invokerFrame.getWidth() - width) / 2; int y = invokerFrame.getY() + (invokerFrame.getHeight() - height) / 2; w.setBounds(x, y, width, height); } public static void centerPosition(Window window, Window w, int width, int height) { int x = window.getX() + (window.getWidth() - width) / 2; int y = window.getY() + (window.getHeight() - height) / 2; w.setBounds(x, y, width, height); } }