Spring timing task implementation code in Java

import org.apache.log4j.*;
public class TaskJob {
       public static Logger log = Logger
                     .getLogger(TaskJob.class);
       public void SayHello() {
              // TODO Auto-generated method stub
              try {
                     log.info(" Task starting >........");
                     //Business logic code call
                     System.out.println(" time [" + new java.util.Date().toLocaleString()
                                   + "]-----> Hello everyone! ");
                     log.info(" End of task !");
              } catch (Exception e) {
                     log.error(" An exception occurred in the processing task ", e);
              }
       }
}

2. The next configuration in spring:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
    <bean name="taskJob" class="util.TaskJob" />
    <bean id="methodInvokingJobDetail" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
       <property name="targetObject">
           <ref bean="taskJob" />
       </property>
       <property name="targetMethod">
           <value>SayHello</value>
       </property>
    </bean>
    <!--  Configure trigger  -->
    <bean id="cronTrigger" class="org.springframework.scheduling.quartz.CronTriggerBean">
        <!--  You can't go directly to properties here jobDetail Referenced in the taskJob Because he's asking for one jobDetail Type of object, so we have to pass MethodInvokingJobDetailFactoryBean To turn the  -->
       <property name="jobDetail">
           <ref bean="methodInvokingJobDetail" />
       </property>
       <!--  Every day, 8 Point to the 21 At every 1 Minute trigger, see the appendix for details  -->
       <property name="cronExpression">
           <value>0 * 08-21 * * ?</value>
       </property>
    </bean>
    <bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
       <!--  Add trigger  -->
       <property name="triggers">
           <list>
              <ref local="cronTrigger" />
           </list>
       </property>
    </bean>
</beans>

3. Test the executed class, and once the spring configuration file is loaded, you can see the timing task run.

package util;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class TestApp {

public static void main(String[] args) {
    // TODO Auto-generated method stub
        System.out.println(" loading spring The configuration file ....");
      ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
      System.out.println(" The configuration file is loaded !");
//   ApplicationContext context2 = new ClassPathXmlApplicationContext("test/timerTask/quartzTimer.xml");
}
}

To run in a web project, add the following code to web.xml:

<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>/WEB-INF/classes/applicationContext.xml</param-value>
</context-param>
<context-param>
    <param-name>log4jConfigLocation</param-name>
    <param-value>/WEB-INF/log4j.properties</param-value>
</context-param>
<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

Here are some instructions copied online:
The special character allowed by the field allowed value
Minus 59 seconds, minus PI times PI over PI
0 minus 59, minus PI times PI over PI
Zero minus 23 hours, minus * /
Date 1-31, - *? W/L C
January 1-12 or jan-dec, minus * /
Week 1-7 or SUN-SAT - *? L/C #
Year (optional) left blank, 1970-2099, minus * /
Expression meaning
"0, 0, 12 * *?" Triggered every day at 12 noon
"0 15 10? * *" triggered at 10:15 am every day
"0, 15, 10 * *?" Triggered at 10:15 am each day
"0, 15, 10 * *? *" triggered at 10:15 am every day
"0, 15, 10 * *? Trigger every day at 10:15 am in 2005
"0 * 14 * *?" Triggered every minute between 2 p.m. and 2:59 p.m
"0, 0, 5, 14 * *?" Trigger every 5 minutes between 2 p.m. and 2:55 p.m
"0, 0, 5, 14,18 * *?" Trigger every 5 minutes between 2 p.m. and 2:55 p.m. and 6 p.m. and 6:55 p.m
"0, 0, minus 5, 14 * *?" Trigger every minute between 2 p.m. and 2:05 p.m
"0 10 44 14? 3 WED" on wednesdays in March every year at 2:10 PM and 2:44 PM
"0 15 10? * mon-fri "triggers at 10:15 am Monday through Friday
"0, 15, 10, 15 times?" Triggered at 10:15 am on the 15th of each month
"0, 15, 10 L *?" Triggered at 10:15 am on the last day of each month
"0 15 10? * 6L" triggers at 10:15 am on the last Friday of each month
"0 15 10? * 6L 2002-2005" triggered at 10:15 am on the last Friday of each month from 2002 to 2005
"0 15 10? * 6#3" triggers at 10:15 am on the third Friday of the month