# Lucene 8.11.4 backward-codecs API

Codecs for reading indexes from older versions of Lucene.

See: Description

Packages
Package | Description
--- | ---
org.apache.lucene.codecs | Common APIs for use by backwards compatibility codecs.
org.apache.lucene.codecs.lucene50 | Lucene 5.0 file format.
org.apache.lucene.codecs.lucene60 | Lucene 6.0 file format.
org.apache.lucene.codecs.lucene70 | Components from the Lucene 7.0 index format.
org.apache.lucene.codecs.lucene80 | Lucene 8.0 file format.
org.apache.lucene.codecs.lucene84 | Lucene 8.4 file format.
org.apache.lucene.codecs.lucene86 | Lucene 8.6 file format.

Codecs for reading indexes from older versions of Lucene.

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