Here you can find the source of getRolloverColor()
static Color getRolloverColor()
//package com.java2s; /*/*ww w . j a v a 2 s . c o m*/ * (C) Copyright 2005 Nilo J. Gonzalez * * This library is free software; you can redistribute it and/or modify it under * the terms of the GNU Lesser Gereral Public Licence as published by the Free * Software Foundation; either version 2 of the Licence, or (at your opinion) any * later version. * * This library is distributed in the hope that it will be usefull, but WITHOUT ANY * WARRANTY; without even the implied warranty of merchantability or fitness for a * particular purpose. See the GNU Lesser General Public Licence for more details. * * You should have received a copy of the GNU Lesser General Public Licence along * with this library; if not, write to the Free Software Foundation, Inc., 59 * Temple Place, Suite 330, Boston, Ma 02111-1307 USA. * * http://www.gnu.org/licenses/lgpl.html (English) * http://gugs.sindominio.net/gnu-gpl/lgpl-es.html (Espa?ol) * * * Original author: Nilo J. Gonzalez */ import java.awt.*; import javax.swing.*; public class Main { protected static Color rollColor; static Color getRolloverColor() { if (rollColor == null) { rollColor = getColorAlfa(UIManager.getColor("Button.focus"), 40); } return rollColor; } static Color getColorAlfa(Color col, int alfa) { return new Color(col.getRed(), col.getGreen(), col.getBlue(), alfa); } }