org.apache.lucene.index
Interfaces 
IndexCommitPoint
IndexDeletionPolicy
TermDocs
TermFreqVector
TermPositions
TermPositionVector
Classes 
FieldNormModifier
FilterIndexReader
FilterIndexReader.FilterTermDocs
FilterIndexReader.FilterTermEnum
FilterIndexReader.FilterTermPositions
IndexFileNameFilter
IndexModifier
IndexReader
IndexReader.FieldOption
IndexWriter
KeepOnlyLastCommitDeletionPolicy
MultipleTermPositions
MultiReader
ParallelReader
Payload
Term
TermEnum
TermVectorOffsetInfo
Exceptions 
CorruptIndexException
FieldReaderException
StaleReaderException