Java tutorial
//package com.java2s; /** Copyright 2011, Aiki IT, FotoRenamer Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. */ import java.awt.Component; import java.awt.Dimension; import java.awt.Toolkit; public class Main { /** * Gauge the given component on screen. * * @param component Swing-component to gauge. */ public static void makeCentered(final Component component) { Toolkit toolkit = Toolkit.getDefaultToolkit(); Dimension dim = toolkit.getScreenSize(); int screenWidth = dim.width; int screenHeight = dim.height; component.setLocation((screenWidth - component.getSize().width) / 2, (screenHeight - component.getSize().height) / 2); } }