MessageFormat.format 字符串模版

字符串模版：把参考{0},{1}的值用数组的值来替换

import java.text.MessageFormat;

// 输出：参数0：参数0的值,参数1：参数1的值,参数2：参数2的值
MessageFormat.format("参数0：{0},参数1：{1},参数2：{2}", new Object[] { "参数0的值", "参数1的值", "参数2的值" })


// 输出：Once upon a time (2011-9-1, around about 下午4:32), there was a humble developer named Geppetto who slaved for 4 days with 21% complete user requirements. 
			String message = "Once upon a time ({1,date}, around about {1,time,short}), there "
					+ "was a humble developer named Geppetto who slaved for "
					+ "{0,number,integer} days with {2,number,percent} complete user " + "requirements. ";
			Object[] variables = new Object[] { new Integer(4), new Date(), new Double(0.21) };
			String output = MessageFormat.format(message, variables);