java.text.MessageFormat

 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);

输出为：

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

int fileCount = 1273;

String diskName = "MyDisk";

Object[] testArgs = {new Long(fileCount), diskName};



MessageFormat form = new MessageFormat(

     "The disk \"{1}\" contains {0} file(s).");



System.out.println(form.format(testArgs));