code: public OutputStream create(String src,
                               boolean overwrite
                               ) throws IOException {
      return create(src, overwrite, defaultReplication, defaultBlockSize, null);
    }
docs: Create a new dfs file and return an output stream for writing into it.
  
  @param src stream name
  @param overwrite do not check for file existence if true
  @return output stream
  @throws IOException