How to use

getParameterNames

method

in

javax.portlet.filter.ActionRequestWrapper

@Override
public Enumeration<String> getParameterNames() {
  Set<String> names = new LinkedHashSet<>();
  if (_inherit) {
    Enumeration<String> enu = super.getParameterNames();
    while (enu.hasMoreElements()) {
      names.add(enu.nextElement());
    }
  }
  names.addAll(_params.keySet());
  return Collections.enumeration(names);
}

@Override
public Enumeration<String> getParameterNames() {
  Set<String> paramNames = new HashSet<String>();
  Enumeration<String> paramEnum = super.getParameterNames();
  while (paramEnum.hasMoreElements()) {
    paramNames.add(paramEnum.nextElement());
  }
  paramNames.addAll(getMultipartParameters().keySet());
  return Collections.enumeration(paramNames);
}

@Override
public Enumeration<String> getParameterNames() {
  Set<String> paramNames = new HashSet<String>();
  Enumeration paramEnum = super.getParameterNames();
  while (paramEnum.hasMoreElements()) {
    paramNames.add((String) paramEnum.nextElement());
  }
  paramNames.addAll(getMultipartParameters().keySet());
  return Collections.enumeration(paramNames);
}