# Deprecated API

## Contents

- Deprecated Classes

- Deprecated Classes
  Class and Description
  org.apache.lucene.codecs.blocktree.Lucene40BlockTreeTermsReader Only for 4.x backcompat
  org.apache.lucene.codecs.lucene40.Lucene40Codec Only for reading old 4.0 segments
  org.apache.lucene.codecs.lucene40.Lucene40CompoundFormat only for reading old 4.x segments
  org.apache.lucene.codecs.lucene40.Lucene40DocValuesFormat Only for reading old 4.0 and 4.1 segments
  org.apache.lucene.codecs.lucene40.Lucene40FieldInfosFormat Only for reading old 4.0 and 4.1 segments
  org.apache.lucene.codecs.lucene40.Lucene40LiveDocsFormat Only for reading old 4.x segments
  org.apache.lucene.codecs.lucene40.Lucene40NormsFormat Only for reading old 4.0 and 4.1 segments
  org.apache.lucene.codecs.lucene40.Lucene40PostingsFormat Only for reading old 4.0 segments
  org.apache.lucene.codecs.lucene40.Lucene40SegmentInfoFormat Only for reading old 4.0-4.5 segments
  org.apache.lucene.codecs.lucene40.Lucene40StoredFieldsFormat only for reading 4.0 segments
  org.apache.lucene.codecs.lucene40.Lucene40TermVectorsFormat only for reading 4.0 and 4.1 segments
  org.apache.lucene.codecs.lucene410.Lucene410Codec only for reading old 4.10 segments
  org.apache.lucene.codecs.lucene410.Lucene410DocValuesFormat only for old 4.x segments
  org.apache.lucene.codecs.lucene41.Lucene41Codec Only for reading old 4.1 segments
  org.apache.lucene.codecs.lucene41.Lucene41PostingsFormat only for reading old 4.x segments
  org.apache.lucene.codecs.lucene41.Lucene41PostingsReader only for reading old 4.x segments
  org.apache.lucene.codecs.lucene41.Lucene41StoredFieldsFormat only for reading old 4.x segments
  org.apache.lucene.codecs.lucene41.Lucene41StoredFieldsIndexReader only for reading old segments
  org.apache.lucene.codecs.lucene42.Lucene42Codec Only for reading old 4.2 segments
  org.apache.lucene.codecs.lucene42.Lucene42DocValuesFormat Only for reading old 4.2 segments
  org.apache.lucene.codecs.lucene42.Lucene42FieldInfosFormat Only for reading old 4.2-4.5 segments
  org.apache.lucene.codecs.lucene42.Lucene42NormsFormat only for reading old 4.x segments
  org.apache.lucene.codecs.lucene42.Lucene42TermVectorsFormat only for reading old segments
  org.apache.lucene.codecs.lucene45.Lucene45Codec Only for reading old 4.3-4.5 segments
  org.apache.lucene.codecs.lucene45.Lucene45DocValuesFormat Only for reading old 4.3-4.5 segments
  org.apache.lucene.codecs.lucene46.Lucene46Codec Only for reading old 4.6-4.8 segments
  org.apache.lucene.codecs.lucene46.Lucene46FieldInfosFormat only for old 4.x segments
  org.apache.lucene.codecs.lucene46.Lucene46SegmentInfoFormat only for old 4.x segments
  org.apache.lucene.codecs.lucene49.Lucene49Codec only for old 4.x segments
  org.apache.lucene.codecs.lucene49.Lucene49DocValuesFormat only for old 4.x segments
  org.apache.lucene.codecs.lucene49.Lucene49NormsFormat only for reading 4.9/4.10 indexes
  org.apache.lucene.codecs.lucene50.Lucene50Codec Only for reading old 5.0-5.2 segments
  org.apache.lucene.codecs.lucene50.Lucene50DocValuesFormat Only for reading old 5.0-5.3 segments
  org.apache.lucene.codecs.lucene53.Lucene53Codec Only for reading old 5.3 segments

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