Here you can find the source of isNativeMacLookAndFeel()
public static boolean isNativeMacLookAndFeel()
//package com.java2s; /*/*from w w w . j a v a 2 s . c o m*/ * UIUtils.java 2/6/13 1:04 PM * * Copyright (C) 2012-2013 Nick Ma * * 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 3 * of the License, or 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. */ import javax.swing.UIManager; public class Main { /** * True if checked for mac yet. */ private static boolean checkedMac; /** * True if running on Mac. */ private static boolean isMac; public static boolean isNativeMacLookAndFeel() { if (!isMac()) { return false; } String laf = UIManager.getLookAndFeel().getClass().getName(); return (laf.equals(UIManager.getSystemLookAndFeelClassName())); } /** * Returns true if running on Mac. */ public static boolean isMac() { if (!checkedMac) { String osName = System.getProperty("os.name"); if (osName != null && osName.indexOf("Mac") != -1) { isMac = true; } checkedMac = true; } return isMac; } }