org.apache.lucene.search
Interfaces 
Searchable
Weight
Classes 
BooleanClause
BooleanQuery
CachingWrapperFilter
DateFilter
DefaultSimilarity
Explanation
Filter
FilteredTermEnum
FuzzyQuery
FuzzyTermEnum
HitCollector
Hits
IndexSearcher
MultiSearcher
MultiTermQuery
PhrasePrefixQuery
PhraseQuery
PrefixQuery
Query
QueryFilter
RangeQuery
RemoteSearchable
ScoreDoc
Scorer
Searcher
Similarity
TermQuery
TopDocs
WildcardQuery
WildcardTermEnum
Exceptions 
BooleanQuery.TooManyClauses