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Call a Java Class on Server start-up

abhishek pendkay
Ranch Hand

Joined: Jan 01, 2007
Posts: 184
Hi All,

I am new to WebLogic. I am using WebLogic 10.3. I want to call a JAVA class on server startup. This class and the dependent classes are all bundeled into a JAR. How do I do this..??


The significant problems we face cannot be solved by the same level of thinking which created them – Einstein
SCJP 1.5, SCWCD, SCBCD in the making
Ulf Dittmer

Joined: Mar 22, 2005
Posts: 42956
Does the app include a web app part? If so, then that's what ServletContextListener classes are for.
abhishek pendkay
Ranch Hand

Joined: Jan 01, 2007
Posts: 184
No it is not a web-app nor is it connected with any servlet or JSP page so I guess ServletContextListener would not help me.

The class is a simple java class which acts like a scheduler and which should start with server start-up and it depends on few other class files. All of these class files are packaged in a jar file. Is there a way I can tell Weblogic to read that jar and call my class (it has a main method) at startup..??
Deepak Pant
Ranch Hand

Joined: Feb 13, 2004
Posts: 446
WebLogic Server console has a place where you can enter the fully qualified Java class name. This class gets called at the time of server startup. All you have to ensure is that the class file or the jar (which contains the class) is present in the classpath.

Both Startup and Shutdown Classes are provided for doing life cycle maintenance activities.
Krishnaa Kumar

Joined: May 05, 2011
Posts: 25

Implement your jar as a JavaAgent and set javaagent parameters in server start up file(bat or sh)
Consider Paul's rocket mass heater.
subject: Call a Java Class on Server start-up
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