Here you can find the source of paintGrid(Graphics g, int width, int height, Color darkColor, Color brightColor)
public static void paintGrid(Graphics g, int width, int height, Color darkColor, Color brightColor)
//package com.java2s; /*//from ww w.j a v a2 s . co m * Swing Explorer. Tool for developers exploring Java/Swing-based application internals. * Copyright (C) 2012, Maxim Zakharenkov * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */ import java.awt.Color; import java.awt.Graphics; public class Main { public static void paintGrid(Graphics g, int width, int height, Color darkColor, Color brightColor) { g.setColor(darkColor); g.fillRect(0, 0, width, height); g.setColor(brightColor); int inc = 5; for (int x = 0; x < width; x += inc * 2) { for (int y = 0; y < height; y += inc * 2) { g.fillRect(x, y, inc, inc); g.fillRect(x + inc, y + inc, inc, inc); } } } }