Examples of java.util.regex.Matcher.groupCount()

java.util.regex.Matcher.groupCount()
Returns the number of capturing groups in this matcher's pattern.
Group zero denotes the entire pattern by convention. It is not included in this count.
Any non-negative integer smaller than or equal to the value returned by this method is guaranteed to be a valid group index for this matcher.
@return The number of capturing groups in this matcher's pattern

    while ((line = br.readLine()) != null) {
      if (p_comment.matcher(line).find()) {
        continue;
      }
      m = p_parameter.matcher(line);
      if (m.find() && (m.groupCount() == 6)) {
        GridParameter p = new GridParameter(Integer.parseInt(m.group(3)), m.group(4), m.group(6),
            m.group(5));
        getDiscipline(Integer.parseInt(m.group(1))).getCategory(
            Integer.parseInt(m.group(2))).setParameter(p);
      }

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    byte[] bytearrayMessage = null;


    try {
      Matcher matcher = ImapToolkit.getMessagePattern().matcher(url);
      matcher.find();
      if( matcher.groupCount()>0 ) {
        // We found a message url. Determine the message UID from the url.
        int messageUID = Integer.parseInt(matcher.group(3));
        mLog.debug("Read mime message uid: " + messageUID + " for IMAP url: " + url);
        Session session = Session.getInstance(new Properties());

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    if (mQueryText != null) {
      // Remove the mimetype field if the query contains it


      Matcher matcher = mimetypeFieldPattern.matcher(mQueryText);
      boolean found = matcher.find();
      if (found && matcher.groupCount() > 0) {
        // the first group is the mimetype field identifier
        mimeTypeFieldText = matcher.group(1);
        queryText = mQueryText.replace(mimeTypeFieldText, "");
        //System.out.println("Query after mimetype removing: " + queryText);

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  public static String createURLWithoutPath(String completeUrl) throws RegainException {


    String result = "";
    Matcher matcher = urlPatternLeft.matcher(completeUrl);
    matcher.find();
    if (matcher.groupCount() > 0) {
      try {
        return matcher.group(1) + "/";
      } catch (IllegalStateException ex) {
        // No match found
        return "";

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      throw new JavaSoundUrlParserException("Expected URL to start with: " + "javasound://");
    Matcher m = pattern.matcher(url);
    if (!m.matches())
      throw new JavaSoundUrlParserException("URL does not match regular expression for javasound URLs");
    
    int groupCount = m.groupCount();
    
    double rate = AudioFormat.NOT_SPECIFIED;
    int bits = AudioFormat.NOT_SPECIFIED;
    int channels = AudioFormat.NOT_SPECIFIED;
    int endian = AudioFormat.NOT_SPECIFIED;

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        al.add(new FixedString(s.substring(i, m.start())));
    }


    // Expect 6 groups in regular expression
    String[] sa = new String[6];
    for (int j = 0; j < m.groupCount(); j++)
        {
        sa[j] = m.group(j + 1);
//         System.out.print(sa[j] + " ");
        }
//     System.out.println();

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            // name based guess
            if (buddy.getUser().indexOf("@") == -1) {
                Pattern p = Pattern
                        .compile("^(aim|msn|yahoo|icq|gadu-gadu)[-_.].*");
                Matcher m = p.matcher(buddy.getUser());
                if (m.matches() && m.groupCount() >= 1) {
                    String type = m.group(1);
                    if (type != null) {
                        statusIcon = Standard
                                .getIcon("imagethemes/statusicons/"
                                        + type

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     */
    public static String find(String self, Pattern pattern, Closure closure) {
        Matcher matcher = pattern.matcher(self);
        if (matcher.find()) {
            if (hasGroup(matcher)) {
                int count = matcher.groupCount();
                List groups = new ArrayList(count);
                for (int i = 0; i <= count; i++) {
                    groups.add(matcher.group(i));
                }
                return InvokerHelper.toString(closure.call(groups));

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  public void test() {
    String clause = "<#include \"/template/head.ftl\"/>";
    Pattern pattern = Pattern.compile("<#(.*)/>");
    Matcher m = pattern.matcher(clause);
    System.out.println(m.find());
    System.out.println(m.groupCount());
    System.out.println(Pattern.matches("<#(.*)/>", clause));
    System.out.println(m.group(1));
    StringBuffer sb = new StringBuffer();
    m.appendReplacement(sb, "[#$1/]");
    System.out.println(sb);

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    // \b(\w+)\s?[,]?\s?(\w+)\s?[,]?\s?(\w+)\b
    // WORD SPACE , SPACE WORD SPACE , SPACE WORD
    // tested using http://www.javaregex.com/test.html
    Pattern p = Pattern.compile("\\b(\\w+)\\s*[,]?\\s*(\\w+)\\s*[,]?\\s*(\\w+)\\b");
    Matcher m = p.matcher(address);
    if (m.matches() && m.groupCount()>3)
    {
      addField(d, parent,"City",m.group(1));
      addField(d, parent,"StateProvince",m.group(2));
      addField(d, parent,"CountryRegion",m.group(3));
    }

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