TimerTask例子

1、job.java

 

/**
* <b>功能：</b><br>
* <br>
* <b>完整路徑：</b> com.job <br>
* <b>創建日期：</b> 2010-11-1 下午04:01:27 <br>
* @author WangGaopeng<br>
* @version 1.0, 2010-11-1
*/
public class job extends TimerTask
{

/* (non-Javadoc)
* @see java.util.TimerTask#run()
*/
@Override
public void run()
{
// TODO Auto-generated method stub
System.out.println("我在工作2！");
}

}

 

2、work.java

 

/**
* <b>功能：</b><br>
* <br>
* <b>完整路徑：</b> com.work <br>
* <b>創建日期：</b> 2010-11-1 下午03:45:19 <br>
* @author WangGaopeng<br>
* @version 1.0, 2010-11-1
*/
public class work implements ServletContextListener
{

/* (non-Javadoc)
* @see javax.servlet.ServletContextListener#contextDestroyed(javax.servlet.ServletContextEvent)
*/
public void contextDestroyed(ServletContextEvent arg0)
{
// TODO Auto-generated method stub

}

/* (non-Javadoc)
* @see javax.servlet.ServletContextListener#contextInitialized(javax.servlet.ServletContextEvent)
*/
public void contextInitialized(ServletContextEvent arg0)
{
// TODO Auto-generated method stub
 

Timer timer = new Timer();
timer.schedule(new job(), 0, 2000);
}

}

 

 

3、web.xml

 

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

<listener>
<listener-class>com.work</listener-class>
</listener>

</web-app>