Here you can find the source of isWinLAF()
public static boolean isWinLAF()
//package com.java2s; /*/*from www . j a v a 2 s. com*/ * #%L * Cytoscape Swing Utility API (swing-util-api) * $Id:$ * $HeadURL:$ * %% * Copyright (C) 2006 - 2016 The Cytoscape Consortium * %% * This program 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 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 Lesser Public License for more details. * * You should have received a copy of the GNU General Lesser Public * License along with this program. If not, see * <http://www.gnu.org/licensses/lgpl-2.1.html>. * #L% */ import javax.swing.UIManager; public class Main { /** * @return true if the current Look and Feel is the Windows system one. */ public static boolean isWinLAF() { return UIManager.getLookAndFeel() != null && "Windows".equals(UIManager.getLookAndFeel().getID()); } }