Java mail how to send automatically an email on condition

Question

Never used Java mail before.

In my JSF web app, I have an entity (followUp) with a property private Date checkDate; that corresponds to an

Answer 1

Based on your question history I know that you're using Glassfish 3 (Java EE 6 with EJB 3.1), so I'd suggest to create a @Singleton EJB with @Schedule method which executes in the background at specified intervals, for example daily at midnight (00:00:00).

@Singleton
public class MailReminder {

    @Schedule(hour="0", minute="0", second="0", persistent=false)
    public void run() {
        // Do your check and mail job here.
    }

}

That's it. No further configuration is necessary. For testing purposes you could use

    @Schedule(hour="*", minute="*/1", second="0", persistent=false)

to let it run every minute.

See also:

• Java EE 6 tutorial - Using timer service