正则验证：Pattern,Matcher

     public static void main(String[] args) {

         String regex="([a-z]{1})(\\d{2})";

         String candidate = "sdsdx99sdsdc99Supr99erJau99va";

         Pattern p=Pattern.compile(regex);

         Matcher matcher=p.matcher(candidate);

         while(matcher.find()){

             int n=matcher.groupCount();

 //            for(int i=0;i<=n;i++){

 //                String str=matcher.group(i);

 //                System.out.println(str);

 //            }

             System.out.println(n);

         }

 //        matcher.reset();

 //        System.out.println(matcher.group());

 //

 //

 //        System.out.println(matcher.replaceAll("xulu"));

     }