Java tutorial
//package com.java2s; /* * Copyright (C) TernUp Research Labs * * This file is part of Caddisfly * * Caddisfly is free software: you can redistribute it and modify it under the terms of * the GNU Affero General Public License (AGPL) as published by the Free Software Foundation, * either version 3 of the License or any later version. * * Caddisfly 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 included below for more details. * * The full license text can also be seen at <http://www.gnu.org/licenses/agpl.html>. */ public class Main { private static final int GRAY_TOLERANCE = 10; private static boolean isNotGray(int[] rgb) { return Math.abs(rgb[0] - rgb[1]) > GRAY_TOLERANCE || Math.abs(rgb[0] - rgb[2]) > GRAY_TOLERANCE; } }