code: protected void handleComputeFields(int julianDay) {
          super.handleComputeFields(julianDay);
          int y = internalGet(EXTENDED_YEAR) - Taiwan_ERA_START;
          if (y > 0) {
              internalSet(ERA, MINGUO);
              internalSet(YEAR, y);
          } else {
              internalSet(ERA, BEFORE_MINGUO);
              internalSet(YEAR, 1- y);
          }
      }
docs: {@inheritDoc}