Putting a ( String into a byte[] to send through a datagram)

Question

I am making a program in java to send email in the form of an applet. I am not sure it is going to work but this is what I have so far:
import java.awt.*;
import java.io.*;
import java.net.*;
import javax.swing.event.*;
public class EmailSender extends JFrame
public void init()
//user types in email address
String recieveaddr = "";
JTextField emailaddr = new JTextField(15, recieveaddr);
//user types in his body of the email
String message = "";
JTextArea body = new JTextArea(50,50, body);
//user presses submit button to send email
JButton submit = new JButton("submit", emailaddr, body);
public void run()
  try{
/*I chose to use Datagram for my method to send the email.  I thought about Tcp.  I might change my mind.  I am not going to write down the source of what is supposed to go here.  What I just want to do here is take the message and the email address and send it.  I must know if there is a way to make a byte[] and write a String to it.  If I know this I would be able to send the message with Datagram.*/
     }catch(IOException e){
     e.printStackTrace();
    }I chose to use Datagram for my method to send the email. I thought about Tcp. I might change my mind. I am not going to write down the source of what is supposed to go here. What I just want to do here is take the message and the email address and send it. I must know if there is a way to make a byte[] and write a String to it. If I know this I would be able to send the message with Datagram. But even if I do get the datagram to work I wonder if the program will work.
Thanks,
George

Answer 1

Never mind the previous post before this one that said about:
::So all I need to do is to use it in my public void run() method?
I will figure it out with the api after I download the seperate javamail package and the JAF. I was looking through the api for Java 2 Platform, Standard Edition (J2SE). Thanks for telling me about the javax.mail api. If you didnt tell me i'd keep looking through the wrong api and not being aware that I have to download a seperate package.
George