【轉】java 定時執行任務練習

2. 轉載自http://blog.csdn.net/johnsonvily/article/details/6161147
4. public void contextInitialized(ServletContextEvent sce) {  
5.         timer = new Timer();  
6.         Calendar calendar = Calendar.getInstance();  
7.         // 指定01:00:00點執行  
8.         calendar.set(Calendar.HOUR_OF_DAY, 1);  
9.         calendar.set(Calendar.MINUTE, 0);  
10.         calendar.set(Calendar.SECOND, 0);  
11.         Date date = calendar.getTime();  
12.         timer = new Timer();  
13.         timer.schedule(new NoticeTask(),date);  
14.                 // 若需循環執行，需改成如下代碼  
15.                 // 任務執行週期(毫秒)  
16.         // Long period = Long.valueOf(24 * 60 * 60 * 1000);  
17.                 // timer.schedule(new NoticeTask(), date, period);  
18.     }