Here you can find the source of isMetalLookAndFeel()
public static boolean isMetalLookAndFeel()
//package com.java2s; /*//from ww w .ja 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; import javax.swing.plaf.metal.MetalLookAndFeel; public class Main { /** * Returns whether the current applied look and feel is * the MetalLookAndFeel * * @return true | false */ public static boolean isMetalLookAndFeel() { return UIManager.getLookAndFeel() instanceof MetalLookAndFeel; } }