From: http://superleo.iteye.com/blog/173349
下面的表格顯示了@Schedule annotation的一些默認值：
|
Attribute |
Allowable Values | Default |
| Second | [0,59] | 0 |
| Minute | [0,59] | 0 |
| Hour | [0,23] | 0 |
| dayOfMonth | [1,31] | * |
| Month | [1,12] or {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep","Oct", "Nov", Dec"} | * |
| dayOfWeek | [0,7] or {"Sun", "Mon", "Tue","Wed", "Thu", "Fri", "Sat"} | * |
| Year | A four-digit calendar year |
* |