Regular Expressions inside html file

Question

i'm doing some report genearting tool. the template file is in the form of a html file. and i need to add some values from a database to the file in to some specific places which are marked by spcial tags defined by me.
any way thats not the issue. i read the whole html to a string and then i want to check for those tags.
can anyone just tell me what is regular expession for searching this tag.
(Only one occurance of a tag of specific type is there in the file )
this is the tag <!--data><!-->
thanks in advance

Answer 1

   private String html = "";
   private StringBuffer sb;
   public generateReportUser() {
      try {
         BufferedReader fileIn  = new BufferedReader(new FileReader("E:\\BCSProj\\templates\\tmpUserReport.htm"));
         String s;
         while ((s = fileIn.readLine()) != null) {
          //  html += s;
            html += s + "\n"; //this might be better
      } catch (Exception e) {
         e.printStackTrace();
      System.out.println(html);
      fileIn.close();
      Pattern p = Pattern.compile("(<!--data>)(<!-->)");
      Matcher m = p.matcher(html);
      sb = new StringBuffer();
      while (m.find){
        // "The Data" part can be dynamic
        m.appendReplacement(sb, m.group(1) + "The Data" + m.group(2));
   //     m.appendReplacement(sb, "The Data"); //simple replacement
      m.appendTail(sb);
      System.out.println(new String(sb));
/* They are quite nonsense
//check the mathes found this is always false for me
      System.out.println(m.matches());
//just checking parting the string
      if (m.matches()) {
         int i = m.groupCount();
         for (int j=0;j<i;j++) {
            System.out.println(m.group(j+1));
            System.out.println("***********");
      sb = new StringBuffer(html.trim());
   }