Form-Letter Programming

Form-Letter Programming VS MessageFormat
今天阅读<<编程珠玑>>时发现讲到了Form-Letter Programming，其实这种思想在jdbc,hibernate等地方都有用到。即在字符串中给待替换的参数起个名字，之后将这个名字替换成相应的参数。

正好前几天在阅读代码时看到人家用MessageFormat。这个类完全是Form-Letter Programming的实现。现将这个类的用法给个示例：

java 代码

int planet = 7;
 String event = "a disturbance in the Force";

 String result = MessageFormat.format(
     "At {1,time} on {1,date}, there was {2} on planet {0,number,integer}.",
     planet, new Date(), event);

The output is:

 At 12:30 PM on Jul 3, 2053, there was a disturbance in the Force on planet 7.

可以参考MessageFormat的api获取更多有关MessageFormat的使用方法。