Simple scheduler not working

Hi,

I have created the bundle and compiled the bundle but i am not able to see the logs in the log file

Example

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

/**

* @scr.component

* @scr.service interface="java.lang.Runnable"

* @scr.property name="scheduler.expression" value="0/5 * * * * ?"

*/

*-

public class ScheduledCronJob implements Runnable {

     /** Default log. */  

   protected final Logger log = LoggerFactory.getLogger(ScheduledCronJob.class);    

     public void run() {    

     log.info("Executing a cron job (job#1) through the whiteboard pattern");

    }  //  }

Thanks

Sumit