Here you can find the source of setLookAndFeel()
public static void setLookAndFeel()
//package com.java2s; /*// ww w .j ava 2 s . c o m * SK's Minecraft Launcher * Copyright (C) 2010, 2011 Albert Pham <http://www.sk89q.com> * * 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 * (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 Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ import javax.swing.UIManager; public class Main { /** * Try to set the default look and feel. */ public static void setLookAndFeel() { try { UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()); } catch (Exception e) { } } }