Example CALENDARIUMInterface “SMTPServer”

Email (String to, String message)

notify()

Email

open (String hostId, int port)

sendmsg (String from,

String to,

String subject,

String message)

close()

«interface»

SMTPServer

Qsmtp

+open (String hostId,  int port=25)

+sendmsg (String from,

String to,

String subject,

String message)

+close()

+Qsmtp ()

#finalize()

«use»

mailer.open (“mailbox.univie.ac.at”, 25);

mailer.sendmsg  (“CALENDARIUM“,  “hitz@acm.org”,

“Reminder”,  “Meeting at 12.1.99, 14:00”);

mailer.close();

Qsmtp

SMTPServer

Email

Client

Supplier

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