libxapian-java 1.4.11-2build1 (amd64 binary) in ubuntu focal

 The Xapian search engine library is a highly adaptable toolkit which allows
 developers to easily add advanced indexing and search facilities to their own
 applications. It implements the probabilistic model of information retrieval,
 and provides facilities for performing ranked free-text searches, relevance
 feedback, phrase searching, boolean searching, stemming, and simultaneous
 update and searching. It is highly scalable, and is capable of working with
 collections containing hundreds of millions of documents.
 .
 The Xapian Java bindings provide an interface to the Xapian library from
 Java, allowing both indexing and retrieval operations.
 .
 This package contains the architecture-independent part of the Xapian Java
 bindings.