请问在Java Applet中如何发e-mail ?

我这有个例子,你可以看一下!import java.awt.*;import java.applet.*;import java.net.*;import java.io.*;public class Javamail extends Applet {private int SMTP_PORT = 25;//邮件服务器缺省端口号private String appletSource = "202.99.96.140";//作者邮件服务器IPprivate TextArea MsgArea;private TextField senderField, recipientField, hostField;public void init() {setLayout(new BorderLayout());Panel fields = new Panel();fields.setLayout(new GridLayout(3, 1));Panel recPanel = new Panel();recPanel.setLayout(new GridLayout(2, 1));recPanel.add(new Label("Recipient"));recipientField = new TextField("zffan");// 作 者 邮 件 服 务 器 用 户 名recPanel.add(recipientField);fields.add(recPanel);Panel sendPanel = new Panel();sendPanel.setLayout(new GridLayout(2, 1));sendPanel.add(new Label("Sender"));senderField = new TextField("Your Name");// 由 读 者 填 其 用 户 名sendPanel.add(senderField);fields.add(sendPanel);Panel hostPanel = new Panel();hostPanel.setLayout(new GridLayout(2, 1));hostPanel.add(new Label("Host"));hostField = new TextField("YourCompany.com");// 由 读 者 填 其 邮 件 服 务 器IPhostPanel.add(hostField);fields.add(hostPanel);add("North", fields);MsgArea = new TextArea();add("Center", MsgArea);add("South", new Button("SEND"));}public boolean handleEvent(Event e) {if (e.id == Event.WINDOW_DESTROY)System.exit(0);return super.handleEvent(e);}public boolean action(Event e, Object arg) {if (arg.equals("SEND"))sendMsg(senderField.getText(),recipientField.getText(), hostField.getText());elsereturn super.action(e, arg);return true;}private void sendMsg(String sender, String recipient, String senderHost) {try { // 与 邮 件 服 务 器 通 信Socket s = new Socket(appletSource, SMTP_PORT);PrintStream out = new PrintStream(s.getOutputStream());MsgArea.selectAll();out.println("HELO " + senderHost);//邮件服务器不认证读者所输SMTP是否正确out.println("MAIL FROM: " + sender);out.println("RCPT TO: " + recipient);out.println("DATA");out.println(MsgArea.getSelectedText());out.println(".");out.println("QUIT");}catch(Exception e) { System.out.println("Error " + e); }}} //Javamail