problem while running scheduler task

[chaituu]

i have written DBTest scheduler class and copied into scheduler-plugin.jar;but when i run the server i am getting the below exception;
i want to run the DBTest class for evry 60 seconds..i confgured DBTest in schedular-service.xml;

schedular-service.xml
*********************


true
org.jboss.varia.scheduler.example.DBTest
DBTest Testtttttttt,12345
java.lang.String,int
NOW
60000
-1



DBTest
***********


package org.jboss.varia.scheduler.example;
import java.util.Date;
import org.jboss.varia.scheduler.Schedulable;
import java.sql.*;

import org.apache.log4j.Logger;

public class DBTest implements Schedulable
{
private static final Logger log = Logger.getLogger(DBTest.class);

private String name;
private long value;

public DBTest(String name, long value)
{
this.name = name;
this.value = value;
log.info("ctor, name: " + name + ", value: " + value);
}

public void perform(Date now, long remainingRepetitions)
{
log.info("perform, now: " + now +
", remainingRepetitions: " + remainingRepetitions +
", name: " + name + ", value: " + value);
try
{
Class.forName("xx.xx.x.xx");
Connection con= DriverManager.getConnection("jdbc:oracle:thin:@xxxxx:xxx:xxx","xxxx","xxx");



}catch(Exception e)
{
e.printStackTrace();
}
}
}


2006-02-09 16:28:15,301 ERROR [org.jboss.varia.scheduler.Scheduler] Could not find the constructor or create Schedulable instance
java.lang.NoSuchMethodException: org.jboss.varia.scheduler.example.DBTest.(java.lang.String, int)
at java.lang.Class.getConstructor0(Class.java:1937)
at java.lang.Class.getConstructor(Class.java:1027)
at org.jboss.varia.scheduler.Scheduler.startSchedule(Scheduler.java:294)
at org.jboss.varia.scheduler.Scheduler.startService(Scheduler.java:1157)
at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:272)
at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:222)
at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)