[jdjlist] RE: Daemon Thread

[Emmanuel Eze]

Thanks Shawn.

-----Original Message-----
From: Shawn Quinn [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, September 03, 2002 4:10 PM
To: JDJList
Subject: [jdjlist] RE: Daemon Thread

Emma,
 
I'm not familiar with Jaguar, but by the servlet spec you can set up a
servlet to start up automatically within a web application by giving it a
"load-on-startup" value in the "web.xml" file. The application server will
then automatically instantiate your servlet and invoke its "init()" method
when the server starts up.  i.e. :
 
 <servlet>
  <servlet-name>StartupServlet</servlet-name>
  <servlet-class>com.blah.blah.StartupServlet</servlet-class>
  <load-on-startup>1</load-on-startup>
 </servlet>
 
    -Shawn

-----Original Message-----
From: Tom Jordan [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, September 03, 2002 9:36 AM
To: JDJList
Subject: [jdjlist] RE: Daemon Thread

If you are using JDK 1.3 or above, use java.util.Timer and java.util.TimerTask.

The Timer class lets you schedule tasks at precise intervals just like cron.

Tom

-----Original Message-----
From: Janakiraman Nellissery [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, September 03, 2002 8:51 AM
To: JDJList
Subject: [jdjlist] RE: Daemon Thread


Cron would work fine on Unix platforms..but what about windoze users??
I think if u run an RMI server and let that manage the polling and
mailing mechanism ur job should be done..Since u need to get that poller
running/shutting down whenever ur webserver starts, u can have an ( possibly
ANT Script)
to start and stop these together as necessary.
HTH
-Janaki


-----Original Message-----
From: Jason Bell [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, September 03, 2002 5:31 PM
To: JDJList
Subject: [jdjlist] RE: Daemon Thread


I would get the operating system to do the scheduling, not the Java program.
If you have a Unix type system then read up on "cron"

Jase Bell


-----Original Message-----
From: Emmanuel Eze [mailto:[EMAIL PROTECTED]]
Sent: 03 September 2002 11:35
To: JDJList
Subject: [jdjlist] Daemon Thread


Hi All,

I need to develop a daemon thread that wakes up at a defined interval to
send email based on some conditions. My web application is purely written in
JSP.

I am trying to choose between writing the daemon as a Servlet or a Java
Application.  I need to get this daemon running as soon as the web server is
started. My web server is Jaguar CTS 4.0 from Sybase.

Can somebody pls advise me on whether to use servlet/java application?  Pls
I'd like to know how I can get the daemon to start with the web server.

Thanks

Emma


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