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"));

     }