code: public Account getAccount(String sessionId) throws MovieDbException {
          TmdbParameters parameters = new TmdbParameters();
          parameters.add(Param.SESSION_ID, sessionId);
  
          URL url = new ApiUrl(apiKey, MethodBase.ACCOUNT).buildUrl(parameters);
          String webpage = httpTools.getRequest(url);
  
          try {
              return MAPPER.readValue(webpage, Account.class);
          } catch (IOException ex) {
              throw new MovieDbException(ApiExceptionType.MAPPING_FAILED, "Failed to get Account", url, ex);
          }
      }
docs: Get the basic information for an account. You will need to have a valid session id.
  
  @param sessionId
  @return
  @throws MovieDbException