1 package com.text; 2 3 import java.text.MessageFormat; 4 5 /**替换{0}为指定的字符串*/ 6 public class MessageFormatTest { 7 public static void main(String[] args) { 8 String message = "hello {0}{1}"; 9 message = MessageFormat.format(message ,"world","!!!"); 10 System.out.println(message); 11 } 12 }
<script type="text/javascript"> String.prototype.format=function() { if(arguments.length==0) return this; for(var s=this, i=0; i<arguments.length; i++) s=s.replace(new RegExp("\\{"+i+"\\}","g"), arguments[i]); return s; }; alert("js实现用自符串替换占位符{0} {1} {2}".format("I", "LOVE", "YOU")); </script>