Hi Daxin, How are you going to genereate the keys? Via the database? Also, seeing as you are going to use 'service' with & without Tomcat I'd like to know if either application will be up as long as the server(s) is up. If that's the case you could have both applications check at startup if the daemon is active(running) or not not. If the daemon isn't active either application could start it. If this service should be up whenever the hardware is up you could start the service on boot so it is in theory always available to the 2 applications when they are started but each must check if the daemon is running prior to accessing the daemon.
The person who recommended learning daemons was entirely right and without my knowing more of the 2 applications I can not tell you more except since tomcat will access he daemon, I would look closely at the framework in Jakarta to see if it will suit both applications. I haven't looked at it closely and it Tomcat must be running for the daemon to be running(which I doubt) I wouldn't utilize that framework. -----Original Message----- From: Daxin Zuo [mailto:[EMAIL PROTECTED] Sent: Friday, September 10, 2004 12:03 PM To: Tomcat Users List Subject: RE: How to create/run a Java Service on UNIX First I thank very much for the replies. Please continue forward instruction. this service, written in Java, will serves two applications: one is online with Tomcat, and another one is an offline application. these two applications will sometimes update the same data tables. This service will provide unique keys, and do something else for these two applications. This service will not depend on if Tomcat is running or not. I want this service on UNIX runs automatically when the computer is started, and keep running. Thanks. -----Original Message----- From: John Najarian [mailto:[EMAIL PROTECTED] Sent: Thursday, September 09, 2004 8:35 PM To: 'Tomcat Users List' Subject: RE: How to create/run a Java Service on UNIX It's very easy to launch a Java daemon in Linux/Unix. It used to be difficult & require some JNI programming. On the GNU site I found a slick way someone wronte in Java and it is simple. What I wanted to know from the person asking the question is what they're trying to do with the 'Service'. 'Service' this is Unix not winblows. Get with the correct lingo! - LOL! -----Original Message----- From: John Gentilin [mailto:[EMAIL PROTECTED] Sent: Thursday, September 09, 2004 7:08 PM To: Tomcat Users List Subject: Re: How to create/run a Java Service on UNIX Sorry, missed the beginning of this thread but.. I have this book http://half.ebay.com/cat/buy/prod.cgi?cpid=282172&meta_id=1 and I use it often. It has a very good section on how to create a single or multi threaded server. It does not go into how to launch this process as a daemon thread under Unix. I think all you really need to do is launch the process as a background task by appending the & to the end of the command line. Look at the tomcat Catalina.sh as an example of a startup script to run the service in the background. HTH -John G Daxin Zuo wrote: >The program is written as Java class. Does it requires special functions? >How to make it a service, keep running and ready to provid data? >Thanks. > >-----Original Message----- >From: Mike Curwen [mailto:[EMAIL PROTECTED] >Sent: Thursday, September 09, 2004 3:30 PM >To: 'Tomcat Users List' >Subject: RE: How to create/run a Java Service on UNIX > > >So you've already written this java program, and it has a public static void >main() method, and it all interfaces properly with what you need it to, and >you just want to know how to make it start when your UNIX box starts? > >Or you haven't written the program yet at all, and you want to know how to >go about doing so? > > > > >>-----Original Message----- >>From: Daxin Zuo [mailto:[EMAIL PROTECTED] >>Sent: Thursday, September 09, 2004 5:19 PM >>To: Tomcat Users List >>Subject: RE: How to create/run a Java Service on UNIX >> >> >>Yes. It keep running and sometimes it replies and provides >>some data for other applications. >> >>-----Original Message----- >>From: John Najarian [mailto:[EMAIL PROTECTED] >>Sent: Thursday, September 09, 2004 2:59 PM >>To: 'Tomcat Users List' >>Subject: RE: How to create/run a Java Service on UNIX >> >> >>Do you want to run this as a daemon? >> >> >> > > >--------------------------------------------------------------------- >To unsubscribe, e-mail: [EMAIL PROTECTED] >For additional commands, e-mail: [EMAIL PROTECTED] > > >--------------------------------------------------------------------- >To unsubscribe, e-mail: [EMAIL PROTECTED] >For additional commands, e-mail: [EMAIL PROTECTED] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
