code: public MediaCreditList getSeasonCredits(int tvID, int seasonNumber) throws MovieDbException {
          TmdbParameters parameters = new TmdbParameters();
          parameters.add(Param.ID, tvID);
          parameters.add(Param.SEASON_NUMBER, seasonNumber);
  
          URL url = new ApiUrl(apiKey, MethodBase.SEASON).subMethod(MethodSub.CREDITS).buildUrl(parameters);
          String webpage = httpTools.getRequest(url);
          try {
              return MAPPER.readValue(webpage, MediaCreditList.class);
          } catch (IOException ex) {
              throw new MovieDbException(ApiExceptionType.MAPPING_FAILED, "Failed to get credits", url, ex);
          }
      }
docs: Get the cast & crew credits for a TV season by season number.
  
  @param tvID
  @param seasonNumber
  @return
  @throws MovieDbException