705 lines
30 KiB
HTML
705 lines
30 KiB
HTML
<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html lang="en-us" xml:lang="en-us">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="security" content="public" />
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<meta name="Robots" content="index,follow" />
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<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
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<meta name="DC.Type" content="reference" />
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<meta name="DC.Title" content="Example: Using the HTML form classes" />
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<meta name="abstract" content="" />
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<meta name="description" content="" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 2006" />
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<meta name="DC.Format" content="XHTML" />
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<meta name="DC.Identifier" content="htmfrmex" />
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<meta name="DC.Language" content="en-us" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Example: Using the HTML form classes</title>
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</head>
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<body id="htmfrmex"><a name="htmfrmex"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Example: Using the HTML form classes</h1>
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<div><p></p>
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<div class="section"><p>The following example shows you how to use the HTML form classes.
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You can also view a <a href="htmlout.htm#htmlout">sample output</a> from
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running this code. The HTML classes used in the "showHTML" method are <strong>bold</strong>.</p>
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<div class="note"><span class="notetitle">Note:</span> Read
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the <a href="codedisclaimer.htm#codedisclaimer">Code example disclaimer</a> for
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important legal information.</div>
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<pre>///////////////////////////////////////////////////////////////////////////////
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//
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// This source is an example of using the IBM Toolbox for Java HTML
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// package classes, which allow you to easily build HTML Forms.
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//
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///////////////////////////////////////////////////////////////////////////////
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package customer;
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import java.io.*;
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import java.awt.Color;
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import javax.servlet.*;
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import javax.servlet.http.*;
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import com.ibm.as400.access.*;
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import com.ibm.as400.util.html.*;
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public class HTMLExample extends HttpServlet
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{
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// Determines if user already exists in the list of registrants.
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private static boolean found = false;
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// Registration information will be stored here
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String regPath = "c:\\registration.txt";
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public void init(ServletConfig config)
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{
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try
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{
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super.init(config);
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}
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catch(Exception e)
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{
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e.printStackTrace();
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}
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}
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/**
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* Process the GET request.
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* @param req The request.
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* @param res The response.
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**/
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public void doGet (HttpServletRequest req, HttpServletResponse res)
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throws ServletException, IOException
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{
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res.setContentType("text/html");
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ServletOutputStream out = res.getOutputStream();
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// Display the Web using the new HTML classes
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out.println(showHTML());
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out.close();
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}
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public void doPost (HttpServletRequest req, HttpServletResponse res)
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throws ServletException, IOException
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{
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String nameStr = req.getParameter("name");
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String emailStr = req.getParameter("email");
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String errorText = "";
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// Output stream to write to the servlet
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ServletOutputStream out = res.getOutputStream();
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res.setContentType("text/html");
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// Check name & e-mail parameters for valid values
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if (nameStr.length() == 0)
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errorText += "Customer Name not entered. ";
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if (emailStr.length() == 0)
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errorText += "E-mail not entered. " ;
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// If name & e-mail have both been provided, continue.
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if (errorText.length() == 0)
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{
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try
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{
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//Create the registration.txt file
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FileWriter f = new FileWriter(regPath, true);
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BufferedWriter output = new BufferedWriter(f);
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//buffered reader for searching the file
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BufferedReader in = new BufferedReader(new FileReader(regPath));
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String line = in.readLine();
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// reset the found flag
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found = false;
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// Check to see if this customer has already registered
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// or has already used the same e-mail address
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while (!found)
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{
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// if file is empty or end of file reached.
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if (line == null)
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break;
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// if customer already registered
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if ((line.equals("Customer Name: " + nameStr)) ||
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(line.equals("Email address: " + emailStr)))
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{
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// Output a message to the customer saying they have
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// already registered
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out.println ("<HTML> " +
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"<TITLE> Toolbox Registration</TITLE> " +
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"<META HTTP-EQUIV=\"pragma\" content=\"no-cache\"> " +
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"<BODY BGCOLOR=\"blanchedalmond\" TEXT=\"black\"> " );
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out.println ("<P><HR>" +
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"<P>" + nameStr +
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"</B>, you have already registered using that " +
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"<B>Name</B> or <B>E-mail address</B>." +
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"<P> Thank You!...<P><HR>");
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// Create a HTMLHyperlink object and display it
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out.println ("<UL><LI>" +
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new HTMLHyperlink("./customer.HTMLExample",
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"Back to Registration Form") +
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"</UL></BODY></HTML>");
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found = true;
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break;
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}
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else // read the next line
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line = in.readLine();
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}
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// String object to hold data submitted from the HTML Form
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String data;
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// If the users name or e-mail aren't found in our
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// text file, continue.
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if (!found)
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{
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//------------------------------------------------------------
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// Insert the new customer info into a file
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output.newLine();
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output.write("Customer Name: " + nameStr);
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output.newLine();
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output.write("Email address: " + emailStr);
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output.newLine();
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//------------------------------------------------------------
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//------------------------------------------------------------
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//Getting "USE" checkbox from form
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data = req.getParameter("use");
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if(data != null)
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{
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output.write("Currently Using Toolbox: " + data);
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output.newLine();
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}
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//------------------------------------------------------------
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//------------------------------------------------------------
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//Getting "More Information" checkbox from form
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data = req.getParameter("contact");
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if (data != null)
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{
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output.write("Requested More Information: " + data);
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output.newLine();
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}
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//------------------------------------------------------------
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//------------------------------------------------------------
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//Getting "AS400 Version" from form
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data = req.getParameter("version");
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if (data != null)
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{
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if (data.equals("multiple versions"))
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{
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data = req.getParameter("MultiList");
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output.write("Multiple Versions: " + data);
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}
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else
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output.write("AS400 Version: " + data);
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output.newLine();
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}
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//------------------------------------------------------------
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//------------------------------------------------------------
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//Getting "Current Projects" from form
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data = req.getParameter("interest");
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if (data != null)
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{
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output.write("Using Java or Interested In: " + data);
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output.newLine();
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}
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//------------------------------------------------------------
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//------------------------------------------------------------
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//Getting "Platforms" from form
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data = req.getParameter("platform");
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if (data != null)
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{
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output.write("Platforms: " + data);
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output.newLine();
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if (data.indexOf("Other") >= 0)
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{
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output.write("Other Platforms: " + req.getParameter("OtherPlatforms"));
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output.newLine();
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}
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}
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//------------------------------------------------------------
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//------------------------------------------------------------
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//Getting "Number of iSeries servers" from form
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data = req.getParameter("list1");
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if (data != null)
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{
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output.write("Number of iSeries servers: " + data);
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output.newLine();
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}
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//------------------------------------------------------------
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//------------------------------------------------------------
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//Getting "Comments" from form
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data = req.getParameter("comments");
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if (data != null && data.length() > 0)
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{
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output.write("Comments: " + data);
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output.newLine();
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}
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//------------------------------------------------------------
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//------------------------------------------------------------
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//Getting "Attachment"
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data = req.getParameter("myAttachment");
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if (data != null && data.length() > 0)
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{
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output.write("Attachment File: " + data);
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output.newLine();
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}
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//------------------------------------------------------------
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//------------------------------------------------------------
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//Getting Hidden "Copyright" infomation
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data = req.getParameter("copyright");
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if (data != null)
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{
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output.write(data);
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output.newLine();
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}
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//------------------------------------------------------------
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output.flush();
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output.close();
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// Print a thanks to the customer
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out.println("<HTML>");
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out.println("<TITLE>Thank You!</TITLE>");
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out.println("<META HTTP-EQUIV=\"pragma\" content=\"no-cache\"> ");
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out.println("<BODY BGCOLOR=\"blanchedalmond\">");
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out.println("<HR><P>Thank You for Registering, <B>" + nameStr + "</B>!<P><HR>");
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// Create a HTMLHyperlink object and display it
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out.println("<UL><LI>" +
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new HTMLHyperlink("./customer.HTMLExample", "Back to Registration Form"));
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out.println("</UL></BODY></HTML>");
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}
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}
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catch (Exception e)
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{
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// Show error in browser
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out.println("<HTML>");
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out.println("<TITLE>ERROR!</TITLE>");
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out.println("<META HTTP-EQUIV=\"pragma\" content=\"no-cache\"> ");
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out.println("<BODY BGCOLOR=\"blanchedalmond\">");
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out.println("<BR><B>Error Message:</B><P>");
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out.println(e + "<P>");
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// Create a HTMLHyperlink object and display it
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out.println("<UL><LI>" +
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new HTMLHyperlink("./customer.HTMLExample", "Back to Registration Form"));
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out.println("</UL></BODY></HTML>");
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e.printStackTrace();
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}
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}
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else
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{
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// Output a message to the customer saying customer name &
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// e-mail not entered. Please try again
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out.println ("<HTML> " +
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"<TITLE>Invalid Registration Form</TITLE> " +
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"<META HTTP-EQUIV=\"pragma\" content=\"no-cache\"> " +
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"<BODY BGCOLOR=\"blanchedalmond\" TEXT=\"black\"> " );
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out.println ("<HR><B>ERROR</B> in customer data - <P><B>" +
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errorText +
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"</B><P>Please Try Again... <HR>");
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// Create a HTMLHyperlink object and display it
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out.println("<UL><LI>" +
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new HTMLHyperlink("./customer.HTMLExample", "Back to Registration Form") +
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"</UL></BODY></HTML>");
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}
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// Close the writer
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out.close();
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}
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public void destroy(ServletConfig config)
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{
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// do nothing
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}
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public String getServletInfo()
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{
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return "My Product Registration";
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}
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private String showHTML()
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{
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// String Buffer to hold HTML Page
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StringBuffer page = new StringBuffer();
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// Create the HTML Form object
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<strong>HTMLForm form = new HTMLForm("/servlet/customer.HTMLExample");;</strong>
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<strong>HTMLText txt;</strong>
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// Build the beginning of the HTML Page and add it to the String Buffer
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page.append("<HTML>\n");
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page.append("<TITLE> Welcome!!</TITLE>\n");
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page.append("<HEAD><SCRIPT LANGUAGE=\"JavaScript\">
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function test(){alert(\"This is a sample script executed with a
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ButtonFormInput.\")}</SCRIPT></HEAD>");
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page.append("<META HTTP-EQUIV=\"pragma\" content=\"no-cache\">\n");
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page.append("<BODY BGCOLOR=\"blanchedalmond\" TEXT=\"black\"><BR>\n");
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try
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{
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//--------------------------------------------------------------------
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// Create page title using HTML Text
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<strong>txt = new HTMLText("Product Registration");</strong>
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<strong>txt.setSize(5);</strong>
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<strong>txt.setBold(true);
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txt.setColor(new Color(199, 21, 133));
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txt.setAlignment(HTMLConstants.CENTER);</strong>
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// Add HTML Text to the String Buffer
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page.append(txt.getTag(true) + "<HR><BR>\n");
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//--------------------------------------------------------------------
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//--------------------------------------------------------------------
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// Create a Line Layout
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LineLayoutFormPanel line = new LineLayoutFormPanel();
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<strong>txt = new HTMLText("Enter your name and e-mail address:");
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txt.setSize(4);</strong>
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line.addElement(txt);
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// Add the Line Layout to String Buffer
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page.append(line.toString());
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page.append("<BR>");
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//--------------------------------------------------------------------
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//--------------------------------------------------------------------
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// Set the HTML Form METHOD
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<strong>form.setMethod(HTMLForm.METHOD_POST);</strong>
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//--------------------------------------------------------------------
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//--------------------------------------------------------------------
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// Create a Text input for the name.
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TextFormInput user = new TextFormInput("name");
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user.setSize(25);
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user.setMaxLength(40);
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// Create a Text input for the email address.
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TextFormInput email = new TextFormInput("email");
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email.setSize(30);
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email.setMaxLength(40);
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// Create a ImageFormInput
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ImageFormInput img =
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new ImageFormInput("Submit Form", "..\\images\\myPiimages/c.gif");
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img.setAlignment(HTMLConstants.RIGHT);
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//--------------------------------------------------------------------
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//--------------------------------------------------------------------
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// Create a LineLayoutFormPanel object for the name & e-mail address
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LineLayoutFormPanel line2 = new LineLayoutFormPanel();
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// Add elements to the line form
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line2.addElement(new LabelFormElement("Name:"));
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line2.addElement(user);
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// Create and add a Label Element to the Line Layout
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line2.addElement(new LabelFormElement("E-mail:"));
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line2.addElement(email);
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line2.addElement(img);
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//--------------------------------------------------------------------
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//--------------------------------------------------------------------
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// Create Questions line layout
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LineLayoutFormPanel line3 = new LineLayoutFormPanel();
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// Add elements to the line layout
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line3.addElement(new LineLayoutFormPanel());
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line3.addElement(new
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CheckboxFormInput("use",
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"yes",
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"Do you currently use the Toolbox?",
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false));
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line3.addElement(new LineLayoutFormPanel());
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line3.addElement(new CheckboxFormInput(
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"contact",
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"yes",
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"Would you like information on future Toolbox releases?",
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true));
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line3.addElement(new LineLayoutFormPanel());
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//--------------------------------------------------------------------
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//--------------------------------------------------------------------
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// Create Version Radio Group
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RadioFormInputGroup group = new RadioFormInputGroup("version");
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// Add Radio Form Inputs to the Group
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group.add(new RadioFormInput("version", "v3r2", "V3R2", false));
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group.add(new RadioFormInput("version", "v4r1", "V4R1", false));
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group.add(new RadioFormInput("version", "v4r2", "V4R2", false));
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group.add(new RadioFormInput("version", "v4r3", "V4R3", false));
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group.add(new RadioFormInput("version", "v4r4", "V4R4", false));
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group.add(new
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RadioFormInput("version",
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"multiple versions",
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"Multiple Versions? Which ones:",
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false));
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//Create a Select Form Element
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SelectFormElement mlist = new SelectFormElement("MultiList");
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mlist.setMultiple(true);
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mlist.setSize(3);
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//Create the Options for the Select Form Element
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SelectOption option1 = mlist.addOption("V3R2", "v3r2");
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SelectOption option2 = mlist.addOption("V4R1", "v4r1");
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SelectOption option3 = mlist.addOption("V4R2", "v4r2");
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SelectOption option4 = mlist.addOption("V4R3", "v4r3");
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SelectOption option5 = mlist.addOption("V4R4", "v4r4");
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// Create HTML text
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<strong>txt = new HTMLText("Current Server Level:");
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txt.setSize(4);</strong>
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// Create Grid Layout
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GridLayoutFormPanel grid1 = new GridLayoutFormPanel(3);
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// Add radio group & select form element to the grid
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grid1.addElement(txt);
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grid1.addElement(group);
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grid1.addElement(mlist);
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//--------------------------------------------------------------------
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//--------------------------------------------------------------------
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// Create Grid Layout for interests
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GridLayoutFormPanel grid2 = new GridLayoutFormPanel(1);
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<strong>txt = new HTMLText("Current Projects or Area of Interest: " +
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"(check all that apply)");
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txt.setSize(4);</strong>
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// Add elements to Grid Layout
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grid2.addElement(new LineLayoutFormPanel());
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grid2.addElement(txt);
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// Create and add a Checkbox to the Grid Layout
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grid2.addElement(new
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CheckboxFormInput("interest", "applications", "Applications", true));
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grid2.addElement(new
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CheckboxFormInput("interest", "applets", "Applets", false));
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grid2.addElement(new
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CheckboxFormInput("interest", "servlets", "Servlets", false));
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//--------------------------------------------------------------------
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//--------------------------------------------------------------------
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// Create Line Layout for platforms
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LineLayoutFormPanel line4 = new LineLayoutFormPanel();
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<strong>txt = new HTMLText("Client Platforms Used: " +
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"(check all that apply)");
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txt.setSize(4);</strong>
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// Add elements to Line Layout
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line4.addElement(new LineLayoutFormPanel());
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line4.addElement(txt);
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line4.addElement(new LineLayoutFormPanel());
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line4.addElement(new CheckboxFormInput("platform",
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"95",
|
|
"Windows95",
|
|
false));
|
|
line4.addElement(new CheckboxFormInput("platform",
|
|
"98",
|
|
"Windows98",
|
|
false));
|
|
line4.addElement(new CheckboxFormInput("platform",
|
|
"NT",
|
|
"WindowsNT",
|
|
false));
|
|
line4.addElement(new CheckboxFormInput("platform",
|
|
"OS2",
|
|
"OS/2",
|
|
false));
|
|
line4.addElement(new CheckboxFormInput("platform",
|
|
"AIX",
|
|
"AIX",
|
|
false));
|
|
line4.addElement(new CheckboxFormInput("platform",
|
|
"Linux",
|
|
"Linux",
|
|
false));
|
|
line4.addElement(new CheckboxFormInput("platform",
|
|
"AS400",
|
|
"iSeries",
|
|
false));
|
|
line4.addElement(new CheckboxFormInput("platform",
|
|
"Other",
|
|
"Other:",
|
|
false));
|
|
|
|
TextFormInput other = new TextFormInput("OtherPlatforms");
|
|
other.setSize(20);
|
|
other.setMaxLength(50);
|
|
|
|
line4.addElement(other);
|
|
//--------------------------------------------------------------------
|
|
|
|
//--------------------------------------------------------------------
|
|
// Create a Line Layout for number of servers
|
|
LineLayoutFormPanel grid3 = new LineLayoutFormPanel();
|
|
|
|
<strong>txt = new HTMLText(
|
|
"How many iSeries™ servers do you have?");
|
|
txt.setSize(4);</strong>
|
|
|
|
// Create a Select Form Element for number of servers owned
|
|
SelectFormElement list = new SelectFormElement("list1");
|
|
// Create and add the Select Options to the Select Form Element List
|
|
SelectOption opt0 = list.addOption("0", "zero");
|
|
SelectOption opt1 = list.addOption("1", "one", true);
|
|
SelectOption opt2 = list.addOption("2", "two");
|
|
SelectOption opt3 = list.addOption("3", "three");
|
|
SelectOption opt4 = list.addOption("4", "four");
|
|
SelectOption opt5 = new SelectOption("5+", "FiveOrMore", false);
|
|
list.addOption(opt5);
|
|
|
|
// Add Elements to the Grid Layout
|
|
grid3.addElement(new LineLayoutFormPanel());
|
|
grid3.addElement(txt);
|
|
grid3.addElement(list);
|
|
//--------------------------------------------------------------------
|
|
|
|
//--------------------------------------------------------------------
|
|
// Create a Grid Layout for Product Comments
|
|
GridLayoutFormPanel grid4 = new GridLayoutFormPanel(1);
|
|
<strong>txt = new HTMLText("Product Comments:");
|
|
txt.setSize(4);</strong>
|
|
|
|
// Add elements to the Grid Layout
|
|
grid4.addElement(new LineLayoutFormPanel());
|
|
grid4.addElement(txt);
|
|
// Create a Text Area Form
|
|
grid4.addElement(new TextAreaFormElement("comments", 5, 75));
|
|
grid4.addElement(new LineLayoutFormPanel());
|
|
//--------------------------------------------------------------------
|
|
|
|
//--------------------------------------------------------------------
|
|
// Create a Grid Layout
|
|
GridLayoutFormPanel grid5 = new GridLayoutFormPanel(2);
|
|
<strong>txt = new HTMLText("Would you like to sign on to a server?");
|
|
txt.setSize(4);</strong>
|
|
|
|
// Create a Text input and Label for the system name.
|
|
TextFormInput sys = new TextFormInput("system");
|
|
LabelFormElement sysLabel = new LabelFormElement("System:");
|
|
|
|
// Create a Text input and Label for the userid.
|
|
TextFormInput uid = new TextFormInput("uid");
|
|
LabelFormElement uidLabel = new LabelFormElement("UserID");
|
|
|
|
// Create a Password input and Label for the password.
|
|
PasswordFormInput pwd = new PasswordFormInput("pwd");
|
|
LabelFormElement pwdLabel = new LabelFormElement("Password");
|
|
|
|
// Add the Text inputs, password inputs, and Labels to the grid
|
|
grid5.addElement(sysLabel);
|
|
grid5.addElement(sys);
|
|
grid5.addElement(uidLabel);
|
|
grid5.addElement(uid);
|
|
grid5.addElement(pwdLabel);
|
|
grid5.addElement(pwd);
|
|
//--------------------------------------------------------------------
|
|
|
|
//--------------------------------------------------------------------
|
|
// Add the various panels created to the HTML Form
|
|
// in the order you wish them to appear
|
|
<strong>form.addElement(line2);
|
|
form.addElement(line3);
|
|
form.addElement(grid1);
|
|
form.addElement(grid2);
|
|
form.addElement(line4);
|
|
form.addElement(grid3);
|
|
form.addElement(grid4);
|
|
form.addElement(txt);
|
|
form.addElement(new LineLayoutFormPanel());
|
|
form.addElement(grid5);
|
|
form.addElement(new LineLayoutFormPanel());
|
|
form.addElement(
|
|
new HTMLText("Submit an attachment Here: <br />"));</strong>
|
|
// Add a File Input to the form
|
|
<strong>form.addElement(new FileFormInput("myAttachment"));
|
|
form.addElement(new ButtonFormInput("button",
|
|
"TRY ME!",
|
|
"test()"));</strong>
|
|
// Adds a empty Line Layout, which in turn
|
|
// adds a line break <br /> to the form
|
|
<strong>form.addElement(new LineLayoutFormPanel());
|
|
form.addElement(new LineLayoutFormPanel());
|
|
form.addElement(new SubmitFormInput("submit", "Register"));
|
|
form.addElement(new LineLayoutFormPanel());
|
|
form.addElement(new LineLayoutFormPanel());
|
|
form.addElement(new ResetFormInput("reset", "Reset"));</strong>
|
|
// Add a Hidden Input to the form
|
|
<strong>form.addElement(new
|
|
HiddenFormInput("copyright",
|
|
"(C) Copyright IBM<sup>®</sup> Corp. 1999, 1999"));</strong>
|
|
//--------------------------------------------------------------------
|
|
|
|
// Add the entire HTML Form to the String Buffer
|
|
page.append(form.toString());
|
|
|
|
}
|
|
catch(Exception e)
|
|
{
|
|
e.printStackTrace();
|
|
}
|
|
|
|
// Add the Ending HTML tags to the Buffer
|
|
page.append("</BODY>\n");
|
|
page.append("</HTML>\n");
|
|
|
|
// Return the entire HTML page string
|
|
return page.toString();
|
|
|
|
}
|
|
}</pre>
|
|
</div>
|
|
</div>
|
|
|
|
</body>
|
|
</html> |