# Package org.apache.lucene.backward_codecs.lucene84

Lucene 8.4 file format.

- Class Summary
  Class | Description
  --- | ---
  ForDeltaUtil | Utility class to encode/decode increasing sequences of 128 integers.
  Lucene84Codec | Implements the Lucene 8.4 index format, with configurable per-field postings and docvalues formats.
  Lucene84PostingsFormat | Lucene 5.0 postings format, which encodes postings in packed integer blocks for fast decode.
  Lucene84PostingsFormat.IntBlockTermState | Holds all state required for `Lucene84PostingsReader` to produce a `PostingsEnum` without re-seeking the terms dict.
  Lucene84PostingsReader | Concrete class that reads docId(maybe frq,pos,offset,payloads) list with postings format.
  PForUtil | Utility class to encode sequences of 128 small positive integers.