How to use

keySet

method

in

org.apache.commons.collections4.MultiMap

/**
 * Method used to find description from ATR
 * 
 * @param pAtr
 *            Card ATR
 * @return list of description
 */
@SuppressWarnings("unchecked")
public static final Collection<String> getDescription(final String pAtr) {
  Collection<String> ret = null;
  if (StringUtils.isNotBlank(pAtr)) {
    String val = StringUtils.deleteWhitespace(pAtr);
    for (String key : MAP.keySet()) {
      if (val.matches("^" + key + "$")) {
        ret = (Collection<String>) MAP.get(key);
        break;
      }
    }
  }
  return ret;
}

/**
 * Method used to find ATR description from ATS (Answer to select)
 * 
 * @param pAts
 *            EMV card ATS
 * @return card description
 */
@SuppressWarnings("unchecked")
public static final Collection<String> getDescriptionFromAts(final String pAts) {
  Collection<String> ret = null;
  if (StringUtils.isNotBlank(pAts)) {
    String val = StringUtils.deleteWhitespace(pAts);
    for (String key : MAP.keySet()) {
      if (key.contains(val)) { // TODO Fix this
        ret = (Collection<String>) MAP.get(key);
        break;
      }
    }
  }
  return ret;
}

/**
 * Method used to find description from ATR
 * 
 * @param pAtr
 *            Card ATR
 * @return list of description
 */
@SuppressWarnings("unchecked")
public static final Collection<String> getDescription(final String pAtr) {
  Collection<String> ret = null;
  if (StringUtils.isNotBlank(pAtr)) {
    String val = StringUtils.deleteWhitespace(pAtr);
    for (String key : MAP.keySet()) {
      if (val.matches("^" + key + "$")) {
        ret = (Collection<String>) MAP.get(key);
        break;
      }
    }
  }
  return ret;
}

/**
 * Method used to find ATR description from ATS (Answer to select)
 * 
 * @param pAts
 *            EMV card ATS
 * @return card description
 */
@SuppressWarnings("unchecked")
public static final Collection<String> getDescriptionFromAts(final String pAts) {
  Collection<String> ret = null;
  if (StringUtils.isNotBlank(pAts)) {
    String val = StringUtils.deleteWhitespace(pAts);
    for (String key : MAP.keySet()) {
      if (key.contains(val)) { // TODO Fix this
        ret = (Collection<String>) MAP.get(key);
        break;
      }
    }
  }
  return ret;
}

public void replayHeadersAndStatus(HttpServletResponse target) throws IOException {
  if (isError) {
    if (errorMsg != null) {
      target.sendError(status, errorMsg);
    } else {
      target.sendError(status);
    }
  } else if (redirectionLocation != null) {
    target.sendRedirect(redirectionLocation);
  } else {
    target.setStatus(status);
  }
  target.setStatus(getStatus());
  final Iterator it = headers.keySet().iterator();
  while (it.hasNext()) {
    final String header = (String) it.next();
    final Collection values = (Collection) headers.get(header);
    final Iterator valIt = values.iterator();
    while (valIt.hasNext()) {
      final Object val = valIt.next();
      RequestHeaderUtil.setHeader(target, header, val);
    }
  }
  target.setContentType(getContentType());
  target.setCharacterEncoding(getCharacterEncoding());
  target.setContentLength(getContentLength());
}

final MultiMap headers = getHeaders();
final Iterator it = headers.keySet().iterator();
while (it.hasNext()) {
  final String header = (String) it.next();