code: public String getColumnName(final int column) throws SQLException {
              for (final Map.Entry<String,Integer> vk : this.columnLabels.
                       entrySet()) {
  
                  if (vk.getValue().intValue() == column) {
                      return vk.getKey();
                  } // end of if
              } // end of for
  
              return null;
          }
docs: {@inheritDoc}