This applet uses the HTTProtocol for invoking the GeoCities mail script, that sends e-mail messages to GeoCities members.
Hereinafter is the java-source.

• If you are a GeoCitizen, you could use this applet for your own automatic e-mail messages, by adding the following HTML-tags to your page(s).

  <APPLET CODE="MailApplet.class" CODEBASE="/SiliconValley/Bay/8824/" HEIGHT=36 WIDTH=256>
  <PARAM NAME="membername" VALUE="your_member_name">
  </APPLET>
  

• You would receive an e-mail message every time a visitor would have entered a page of yours. The message would like the following:

  Sent from MailForm posted at:  http://geocities.datacellar.net/your_page
  
  (visitor)  the visitor's internet (DNS) address
  (time)     the time (incl. the TimeZone) of the visit
  
  Remote IP: the visitor's IP address
  

• Note: If the (visitor) field contains "localhost", this means your visitor uses Microsoft IE.

import java.lang.*;
import java.util.*;
import java.io.*;
import java.net.*;
import java.awt.*;
import java.applet.*;

public class MailApplet extends Applet implements Runnable
{
   TextArea txt;

   public void init()
   {
   	txt=new TextArea("Hello ", 2, 60);
      add(txt);
	};

	public void start()
	{
      (new Thread(this)).start();
	}

    public void run() {
        try {
            URL urlDocument = getDocumentBase();
            String sHost = urlDocument.getHost();
            String sLocal = InetAddress.getLocalHost().getHostName();
            String sMember = getParameter("membername");
            if (sMember == null)
                sMember = "jkarchev";       //applet author

            URL urlMail = new URL(urlDocument, "/cgi-bin/homestead/mail.pl?"+sMember);
            URLConnection postMail = urlMail.openConnection();
            postMail.setDoOutput(true);
            postMail.setDoInput(true);

            postMail.setRequestProperty("Referer", urlDocument.toString());
            postMail.setRequestProperty("Connection", "Keep-Alive");
            postMail.setRequestProperty("Content-type", "application/x-www-form-urlencoded");

            PrintStream out = new PrintStream(postMail.getOutputStream());
            out.print("visitor=" + sLocal);
            out.print("&time=" + (new Date()).toString().replace(' ', '+'));
            out.close();

            postMail.connect();
            txt.appendText(sLocal);

            DataInputStream in = new DataInputStream(postMail.getInputStream());
            while (in.available() == 0);
            while (in.available() > 0)
                sLocal = in.readLine();
            in.close();
            txt.appendText(", I'm " + sMember + "\n");
        } catch (Exception e) {
            txt.appendText(e.toString());
        }
    }
}

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