# Package org.apache.lucene.analysis.core

Basic, general-purpose analysis components.

See: Description

- Class Summary
  Class | Description
  --- | ---
  KeywordAnalyzer | "Tokenizes" the entire stream as a single token.
  KeywordTokenizer | Emits the entire input as a single token.
  KeywordTokenizerFactory | Factory for `KeywordTokenizer`.
  LetterTokenizer | A LetterTokenizer is a tokenizer that divides text at non-letters.
  LetterTokenizerFactory | Factory for `LetterTokenizer`.
  LowerCaseFilter | Normalizes token text to lower case.
  LowerCaseFilterFactory | Factory for `LowerCaseFilter`.
  LowerCaseTokenizer | LowerCaseTokenizer performs the function of LetterTokenizer and LowerCaseFilter together.
  LowerCaseTokenizerFactory | Factory for `LowerCaseTokenizer`.
  SimpleAnalyzer | An `Analyzer` that filters `LetterTokenizer` with `LowerCaseFilter`
  StopAnalyzer | Filters `LetterTokenizer` with `LowerCaseFilter` and `StopFilter`.
  StopFilter | Removes stop words from a token stream.
  StopFilterFactory | Factory for `StopFilter`.
  TypeTokenFilter | Removes tokens whose types appear in a set of blocked types from a token stream.
  TypeTokenFilterFactory | Factory class for `TypeTokenFilter`.
  WhitespaceAnalyzer | An Analyzer that uses `WhitespaceTokenizer`.
  WhitespaceTokenizer | A WhitespaceTokenizer is a tokenizer that divides text at whitespace.
  WhitespaceTokenizerFactory | Factory for `WhitespaceTokenizer`.

## Package org.apache.lucene.analysis.core Description

Basic, general-purpose analysis components.

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