code: public int getIntField(String name)
          throws NumberFormatException
      {
          String val = valueParameters(get(name),null);
          if (val!=null)
              return Integer.parseInt(val);
          return -1;
      }
docs: Get a header as an integer value.
  Returns the value of an integer field or -1 if not found.
  The case of the field name is ignored.
  @param name the case-insensitive field name
  @exception NumberFormatException If bad integer found