Here you can find the source of isFlat(String id)
public static boolean isFlat(String id)
//package com.java2s; /*/*from w w w . j ava 2 s . co m*/ * Copyright 2005 Patrick Gotthardt * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import javax.swing.*; public class Main { public static boolean isFlat(JComponent b) { return Boolean.TRUE.equals(b.getClientProperty("pgs.isFlat")); } public static boolean isFlat(String id) { return Boolean.TRUE.equals(UIManager.get(id + ".isFlat")); } }