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By default , Java will use the system configured name lookup mechanism , such as file , nis , etc. As part of this project , the participants will prototype this API over a variety of existing directory services , including CDS , NIS + , and X.500 . Significantly , NIS expression was absent in gastric cancer , independently of its histological type . Information in Romany in FR Yugoslavia is provided by TV and radio stations in Novi Sad , Nis and in smaller regional centers .