Here you can find the source of fixLnF()
public static void fixLnF()
//package com.java2s; //License from project: Open Source License import javax.swing.*; public class Main { public static void fixLnF() { final Object osName = System.getProperties().get("os.name"); if (!osName.equals("Mac OS X")) { loadPlasticLnF();/*from w ww . ja va2 s . com*/ } } public static void loadPlasticLnF() { try { UIManager.setLookAndFeel("com.jgoodies.looks.plastic.PlasticXPLookAndFeel"); } catch (Exception e) { } } }