If you're gonna do it using Java, you'd probably need JSPs and J2EE and
all that stuff, and it wouldn't be simple. You'd probably have better luck
doing it in JavaScript, which means you should ask in a JavaScript
newsgroup.

   Alternatively, if you're not too picky about how the e-mail will be
formatted, you could do it all in HTML. Just fill the "action" attribute of
the form with "mailto:gsuxin@gmail.com", for example.

   - Oliver

What you need is a text area, a servlet and java mail API.

1. Have the form in the HTML post to the servlet, which can then use
Java Mail API to send the contents of the text area in an email. You
can get the text by using request.getParameter("fieldname").

2. If you want a cleaner and reusable approach, put the email sending
logic in a util class and invoke it from the servlet.

3. If you do not feel comfortable with servlets, post to a JSP that
does the same stuff as above using scriptlets.

4. If you are using struts, do (2) in an action class.

-cheers,
Manish

My first thought was FormMail in
http://nms-cgi.sourceforge.net/scripts.shtml

Then I realised what newsgroup I was in.

This isn't even remotely a Java question. Google for 'cgiemail'.

Personally for what you want to do I would do it in php. you could do it
in less then 10 lines of code.

Here is an example from Peter van der Linden's Just Java 6th edition page
659. I hope it will get you started and you can figure out the rest.

import java.io.*;
   import java.net.*;
   public class email {

     public static void main(String args[]) throws IOException {
 Socket sock = null;
 BufferedReader bis = null;
 PrintStream ps = null;

               try {
 sock = new Socket("localhost", 25);
  bis = new BufferedReader(
                       new InputStreamReader(sock.getInputStream()));
 ps = new PrintStream(sock.getOutputStream());

 ps.println("mail from: trelford");
 //System.out.println( dis.readLine() );
 // Exercise for student:
 // check all responses from the SMTP server
 // They should all start with "2nn" or "3nn"
 // Any different reply code means a failure to send mail.
 System.out.println(bis.readLine());
               } catch (IOException ioe) {
                  System.out.println("Sorry, your system is not running a
mailserver on port 25");
                  System.exit(0);
               }

 String Addressee= "linden";
 ps.println("rcpt to: " + Addressee);
 //System.out.println( dis.readLine() );
 System.out.println(bis.readLine());

 ps.println("data");
 //System.out.println( dis.readLine() );
 System.out.println(bis.readLine());

 ps.println("This is the message\n that Java sent");
 ps.println(".");
 System.out.println(bis.readLine());

 ps.flush();
 sock.close();
}
}

I will assume that you mean a Java web app.

I will also assume that you are relative new
to Java web apps.

Below are some JSP code that can be be specified as action
for a HTML form. From 0 to 10 fields in the HTML form are
then emailed.

Arne

<%@page import="java.util.*,javax.mail.*,javax.mail.internet.*"%>
<%!
   /*
    * Configure mail here.
    */
   public final static String MAILSERVER = "mail.xxx.dk";
   public final static String FROM = "mig@xxx.dk";
   public final static String TO = "mig@xxx.dk";
   public final static String SUBJECT = "Test";
   /*
    * Configure pages to go to.
    */
   public static final String SUCCESS = "form.html";
   public static final String FAILURE = "form.html";
   /*
    * Configure fields here.
    */
   public static final String FIELD1 = "Kæde";
   public static final String FIELD2 = "Firma";
   public static final String FIELD3 = "Adresse";
   public static final String FIELD4 = "Postnr";
   public static final String FIELD5 = "By";
   public static final String FIELD6 = "Mail";
   public static final String FIELD7 = "Telefon";
   public static final String FIELD8 = "Fax";
   public static final String FIELD9 = "Att";
   public static final String FIELD10 = "";
%>
<%!
    public static boolean sendEmail(String mailserver, String from,
String to, String subject, String body) {
      try {
         Properties props = System.getProperties();
         props.put("mail.smtp.host", mailserver);
         Session session = Session.getDefaultInstance(props, null);
         MimeMessage message = new MimeMessage(session);
         message.setFrom(new InternetAddress(from));
         message.addRecipient(Message.RecipientType.TO, new
InternetAddress(to));
         message.setSubject(subject);
         message.setText(body);
         Transport.send(message);
      } catch (AddressException e) {
         return false;
      } catch (MessagingException e) {
         return false;
      }
      return true;
   }
%>
<%
   if(request.getMethod().equals("POST")) {
      StringBuffer formdata = new StringBuffer("");
      if(request.getParameter(FIELD1) != null) {
         formdata.append(FIELD1 + ": " + request.getParameter(FIELD1) +
"\n");
      }
      if(request.getParameter(FIELD2) != null) {
         formdata.append(FIELD2 + ": " + request.getParameter(FIELD2) +
"\n");
      }
      if(request.getParameter(FIELD3) != null) {
         formdata.append(FIELD3 + ": " + request.getParameter(FIELD3) +
"\n");
      }
      if(request.getParameter(FIELD4) != null) {
         formdata.append(FIELD4 + ": " + request.getParameter(FIELD4) +
"\n");
      }
      if(request.getParameter(FIELD5) != null) {
         formdata.append(FIELD5 + ": " + request.getParameter(FIELD5) +
"\n");
      }
      if(request.getParameter(FIELD6) != null) {
         formdata.append(FIELD6 + ": " + request.getParameter(FIELD6) +
"\n");
      }
      if(request.getParameter(FIELD7) != null) {
         formdata.append(FIELD7 + ": " + request.getParameter(FIELD7) +
"\n");
      }
      if(request.getParameter(FIELD8) != null) {
         formdata.append(FIELD8 + ": " + request.getParameter(FIELD8) +
"\n");
      }
      if(request.getParameter(FIELD9) != null) {
         formdata.append(FIELD9 + ": " + request.getParameter(FIELD9) +
"\n");
      }
      if(request.getParameter(FIELD10) != null) {
         formdata.append(FIELD10 + ": " + request.getParameter(FIELD10)
+ "\n");
      }
      if(sendEmail(MAILSERVER, FROM, TO, SUBJECT, formdata.toString())) {
         response.sendRedirect(SUCCESS);
      } else {
         response.sendRedirect(FAILURE);
      }
   } else {
      response.sendRedirect(FAILURE);
   }
%>