Head head = new Head(new Title ("The 216 safe web colors")); // Add <head> to <html> html.addElement(head); // New <body> with white background-color Body body = new Body().setBgColor("#FFFFFF"); // New <table> with no border Table table = new Table(0).setWidth(600); table.setCellSpacing(0).setAlign("center"); // Modulate green for (int g = 0; g < hex.length; g++) { // Get current green component String green = hex[g]; // Modulate red for (int r = 0; r < hex.length; r++) { // Get current red component String red = hex[r]; // New <tr> TR tr = new TR(); // Modulate blue for (int b = 0; b < hex.length; b++) { // Get current blue component String blue = hex[b]; // New RGB with modulated green, red and blue String rgb = "#" + red + green + blue; // New <font> with white foreground-color Font font = new Font().setColor("#FFFFFF"); // Change font-color if cell background is to bright if (g > 3) { font.setColor("#000000"); } // New <td> for each color TD td = new TD(font.addElement(rgb)); // Set background for this <td>-tag td.setBgColor(rgb).setAlign("center"); // Add <td> to <tr> tr.addElement(td); } // Add this <tr> to <table> table.addElement(tr); } } // Add <table> to <body> body.addElement(table); // Add <body> to <html> html.addElement(body); // Return <html> out.println(html.toString()); } }

/* * Copyright (c) 1999 The Java Apache Project. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. All advertising materials mentioning features or use of this * software must display the following acknowledgment: * "This product includes software developed by the Java Apache * Project. " * * 4. The names "Java Apache Element Construction Set", "Java Apache ECS" and * "Java Apache Project" must not be used to endorse or promote products * derived from this software without prior written permission. * * 5. Products derived from this software may not be called * "Java Apache Element Construction Set" nor "Java Apache ECS" appear * in their names without prior written permission of the * Java Apache Project. * * 6. Redistributions of any form whatsoever must retain the following * acknowledgment: * "This product includes software developed by the Java Apache * Project. " * * THIS SOFTWARE IS PROVIDED BY THE JAVA APACHE PROJECT "AS IS" AND ANY * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE JAVA APACHE PROJECT OR * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * * This software consists of voluntary contributions made by many * individuals on behalf of the Java Apache Project. For more information * on the Java Apache Project please see . * */ package org.apache.ecs.examples; import java.io.*; import javax.servlet.*; import javax.servlet.http.*; import org.apache.ecs.html.*; /** * This simple servlet displays the 216 safe web colors that can be * rendered by any browser on any platform. * * @version 1.1, 2001/12/30, removed all CSS code and switched back * to full HTML 3.2 compatibility * @version 1.0, 2001/07/04, initial release * @author Christian Brensing */ public class WebColors extends HttpServlet { /** * Valid RGB components. */ private String[] hex = { "00","33","66","99","CC","FF" }; /** * Processes a GET request. */ public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // Set response type to html response.setContentType("text/html"); // Get PrintWriter PrintWriter out = response.getWriter(); // New Html html = new Html(); // New with Head head = new Head(new Title ("The 216 safe web colors")); // Add <head> to <html> html.addElement(head); // New <body> with white background-color Body body = new Body().setBgColor("#FFFFFF"); // New <table> with no border Table table = new Table(0).setWidth(600); table.setCellSpacing(0).setAlign("center"); // Modulate green for (int g = 0; g < hex.length; g++) { // Get current green component String green = hex[g]; // Modulate red for (int r = 0; r < hex.length; r++) { // Get current red component String red = hex[r]; // New <tr> TR tr = new TR(); // Modulate blue for (int b = 0; b < hex.length; b++) { // Get current blue component String blue = hex[b]; // New RGB with modulated green, red and blue String rgb = "#" + red + green + blue; // New <font> with white foreground-color Font font = new Font().setColor("#FFFFFF"); // Change font-color if cell background is to bright if (g > 3) { font.setColor("#000000"); } // New <td> for each color TD td = new TD(font.addElement(rgb)); // Set background for this <td>-tag td.setBgColor(rgb).setAlign("center"); // Add <td> to <tr> tr.addElement(td); } // Add this <tr> to <table> table.addElement(tr); } } // Add <table> to <body> body.addElement(table); // Add <body> to <html> html.addElement(body); // Return <html> out.println(html.toString()); } }