春季的quarz-cron任务究竟是由什么来执行的?

<!--Scheduling-->
<!--Job-->
    <bean id="projUpdater" class="org.springframework.scheduling.quartz.JobDetailBean">
        <property name="jobClass" value="com.myproject.utilscheduling.quartz.ProjUpdaterCronImpl" />
    </bean>
<!---End of Jobs-->
<!--Triggers-->
    <bean id="regularUpdateTrigger" class="org.springframework.scheduling.quartz.CronTriggerBean">
        <property name="jobDetail" ref="projUpdater"/>
        <property name="cronExpression" value="30 1 * * * ?"/>
    </bean>
<!--End ofTriggers-->
<!--Scheduler Factory-->
<bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
    <property name="triggers">
        <list>
            <ref bean="regularUpdateTrigger"/>
        </list>
    </property>
</bean>
<!--End of Scheduler Factory-->
<!--End of Scheduling-->

public class ProjUpdaterCronImpl extends QuartzJobBean {

public ProjUpdaterCronImpl() {
}


protected void executeInternal (JobExecutionContext ctx) throws JobExecutionException {
    System.out.println("[JOB] " + new Date() + "hello");
}

}

public class NewMain {

/**
 * @param args the command line arguments
 */
 public static void main(String[] args) {
    System.out.println("starting job");
 }

}

因此,据我所知,该作业将在1mn30s后开始,并发布在控制台上。我错了。我遇到了几个或多个我解决的错误,所以我可以安全地假设spring配置文件中没有错误,因为在构建和运行时没有错误。那么,我做错了什么,或者我忘了做什么?