Here you can find the source of getBorderInsetsForNoComponent(Border border)
public static Insets getBorderInsetsForNoComponent(Border border)
//package com.java2s; /*// w ww . j a va2 s. c o m This file belongs to the Servoy development and deployment environment, Copyright (C) 1997-2010 Servoy BV This program is free software; you can redistribute it and/or modify it under the terms of the GNU Affero 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 Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program; if not, see http://www.gnu.org/licenses or write to the Free Software Foundation,Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 */ import java.awt.Component; import java.awt.Insets; import javax.swing.border.Border; import javax.swing.border.TitledBorder; public class Main { public static Insets getBorderInsetsForNoComponent(Border border) { // in java 7 calling getBorderInsets on TitleBorder with a null component throws NPE, // so let call that with a dummy component if (border instanceof TitledBorder) { return border.getBorderInsets(new Component() { }); } return border.getBorderInsets(null); } }