code: public static String format(String s, Object... args) {
  		return MessageFormat.format(s, args);
  	}
docs: 字符串格式化
  
  use: format("my name is {0}, and i like {1}!", "L.cm", "java")
  
  int long use {0,number,#}
  
  @param s
  @param args
  @return {String}转换后的字符串