Here you can find the source of drawThickRect(Graphics g, int x, int y, int width, int height, int thickness)
public static void drawThickRect(Graphics g, int x, int y, int width, int height, int thickness)
//package com.java2s; /*// w ww . ja va2 s . co m This file is part of the BlueJ program. Copyright (C) 1999-2009,2011,2012,2013,2014,2015 Michael Kolling and John Rosenberg 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 2 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, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. This file is subject to the Classpath exception as provided in the LICENSE.txt file that accompanied this code. */ import java.awt.Graphics; public class Main { /** * Draw a thick rectangle - another of the things missing from the AWT */ public static void drawThickRect(Graphics g, int x, int y, int width, int height, int thickness) { for (int i = 0; i < thickness; i++) g.drawRect(x + i, y + i, width - 2 * i, height - 2 * i); } }