Failed to use sample code to send email

Question

I tried to use the sample of 'sending email from the database with the utl_smtp package', the 2 packages were created successfully, but when I run the pl/sql block to call the stored procedure with:
BEGIN
demo_mail.mail(
sender => 'Me <[email protected]>',
recipients => 'Someone <[email protected]>, ' ||
'"Another one" <[email protected]>',
subject => 'Test',
message => 'Hi! This is a test.');
END;
I got the error:
ORA-29540: class oracle/plsql/net/TCPConnection does not exist.
The error explained is:
Cause: Java method execution failed to find a class with the indicated name.
Action: Correct the name or add the missing Java class.
May I know that how how I follow the action?
I manually installed Jserver by running the initJVM.sql following the instruction. But I still get the error. Maybe My question can be: where is the class class oracle/plsql/net/TCPConnection installed, and how can I add it.
I searched the dba_objects, the only objects similar is a JAVA CLASS '/d70c43a_TCPConnection'.
Minny
Thanks
MInny

Answer 1

you ust to download activation.jar and mail.jar and add them to your build path.
i have used the googlemail smtp server to send mail the code is following:
public void SendMail()
Properties props = new Properties();
props.put("mail.smtp.user", username);
props.put("mail.smtp.host", host);
props.put("mail.smtp.port", port);
props.put("mail.smtp.starttls.enable","true");
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.socketFactory.port", port);
try{
     Authenticator auth = new SMTPAuthenticator(username,password);
Session session = Session.getInstance(props, auth);
MimeMessage msg = new MimeMessage(session);
msg.setText(text);
msg.setSubject(subject);
msg.setFrom(new InternetAddress(senderEmail));
msg.addRecipient(Message.RecipientType.TO, new InternetAddress(receiver));
Transport.send(msg);
}catch(Exception ex) {
     System.out.println("Error Sending:");
System.out.println(ex.getMessage().toString());
and this the SMTPAuthenticator Class which you will need too.
class SMTPAuthenticator extends javax.mail.Authenticator {
     private String fUser;
     private String fPassword;
     public SMTPAuthenticator(String user, String password) {
     fUser = user;
     fPassword = password;
     public PasswordAuthentication getPasswordAuthentication() {
     return new PasswordAuthentication(fUser, fPassword);
     }