Here you can find the source of setLookandFeel()
public static void setLookandFeel()
//package com.java2s; /**/*from www . ja va 2 s . com*/ * @author David Garratt * * Project Name : Commander4j * * Filename : JUtility.java * * Package Name : com.commander4j.util * * License : GNU General Public License * * 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.commander4j.com/website/license.html. * */ import javax.swing.UIManager; import javax.swing.plaf.metal.DefaultMetalTheme; import javax.swing.plaf.metal.MetalLookAndFeel; import javax.swing.plaf.metal.OceanTheme; public class Main { public static void setLookandFeel() { try { SetLookAndFeel("Metal", "Ocean"); } catch (Exception e) { e.printStackTrace(); } } public static void SetLookAndFeel(String LOOKANDFEEL, String THEME) { try { if (LOOKANDFEEL.equals("Metal")) { if (THEME.equals("DefaultMetal")) MetalLookAndFeel.setCurrentTheme(new DefaultMetalTheme()); else if (THEME.equals("Ocean")) MetalLookAndFeel.setCurrentTheme(new OceanTheme()); UIManager.setLookAndFeel(new MetalLookAndFeel()); } } catch (Exception e) { e.printStackTrace(); } } }