org.apache.lucene.search.highlight
Interfaces 
Encoder
Formatter
Fragmenter
Scorer
Classes 
DefaultEncoder
GradientFormatter
Highlighter
NullFragmenter
OffsetLimitTokenFilter
QueryScorer
QueryTermExtractor
QueryTermScorer
SimpleFragmenter
SimpleHTMLEncoder
SimpleHTMLFormatter
SimpleSpanFragmenter
SpanGradientFormatter
TextFragment
TokenGroup
TokenSources
TokenStreamFromTermPositionVector
WeightedSpanTerm
WeightedSpanTermExtractor
WeightedTerm
Exceptions 
InvalidTokenOffsetsException