java quartz

 import java.util.Date;
import java.util.Observable;
import java.util.Observer;

import org.quartz.CronTrigger;
import org.quartz.Job;
import org.quartz.JobDetail;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.quartz.JobListener;
import org.quartz.Scheduler;
import org.quartz.SchedulerException;
import org.quartz.SchedulerFactory;
import org.quartz.SimpleTrigger;
import org.quartz.Trigger;
import org.quartz.TriggerUtils;
import org.quartz.impl.StdSchedulerFactory;

/**
 * @author 10131788
 * Aug 15, 2008
 */
public class SessionScheduler extends Observable implements JobListener{

 private Scheduler scheduler = null;
 private StdSchedulerFactory stdSchedulerFactory = null;
 /**
  * @param args
  * @throws SchedulerException
  */
 public static void main(String[] args) throws SchedulerException {
  // TODO Auto-generated method stub
/*  SessionScheduler scheduler = new SessionScheduler();
  try {
   scheduler.initialize();
  } catch (AccountServiceException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  
  try {
   scheduler.start();
  } catch (AccountServiceException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }*/

 }

 

 public void initialize()  {

  try {

   // lookup "Scheduler"
   stdSchedulerFactory = new StdSchedulerFactory();
   if (stdSchedulerFactory != null) {
    scheduler = stdSchedulerFactory.getScheduler();
   }

  } catch (Exception e) {

  }

 }
 
 public void addJobListener(Observer observer)  {

  this.addObserver(observer);
  try {
   scheduler.addJobListener(this);
  } catch (SchedulerException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
 
 }

 public String getName() {
  // TODO Auto-generated method stub
  return "sessionJob";
 }

 public void jobExecutionVetoed(JobExecutionContext arg0) {
  // TODO Auto-generated method stub
  // set the notify
 }

 public void start() {
  try {
   scheduler.start();
  } catch (SchedulerException e) {
  }
 }
 
 public void jobToBeExecuted(JobExecutionContext arg0) {
  // TODO Auto-generated method stub
  // set the notify
  setChanged();

  // notify the observers
  notifyObservers();

  // reset the notify
  clearChanged(); 
 }

 public void jobWasExecuted(JobExecutionContext arg0,
   JobExecutionException arg1) {
  
 }
 
 public void addCronJob(int hour, int minute){

  CronTrigger trigger = null;
  JobDetail job = null;
  String cronExpression = null;
  Date scheduleDate = null;
  
  if (scheduler != null) {
   try {

    // repeat every day at the requested hour, minute
    cronExpression = new String("0 " + minute + " " + hour + " * * ?");

    // build the trigger
    // the trigger and the job have a one to one correspondance
    // so use the same name and group for both
    trigger = new CronTrigger("sessionTrigger", scheduler.DEFAULT_GROUP,
      "sessionJob",scheduler.DEFAULT_GROUP, cronExpression);

    // build the job
    job = new JobDetail("sessionJob", scheduler.DEFAULT_GROUP, new SessionJob().getClass());

    job.addJobListener(this.getName());
 
    // Schedule the job  to use the associated trigger
    scheduleDate = scheduler.scheduleJob(job, trigger);

   } catch (Exception e) {

   }
  }
 }
 

}