# Package org.apache.lucene.analysis.standard

Fast, general-purpose grammar-based tokenizers.

See: Description

Class Summary
ClassicAnalyzer: Filters `ClassicTokenizer` with `ClassicFilter`, `LowerCaseFilter` and `StopFilter`, using a list of English stop words.
ClassicFilter: Normalizes tokens extracted with `ClassicTokenizer`.
ClassicFilterFactory: Factory for `ClassicFilter`.
ClassicTokenizer: A grammar-based tokenizer constructed with JFlex
ClassicTokenizerFactory: Factory for `ClassicTokenizer`.
StandardTokenizerFactory: Factory for `StandardTokenizer`.
UAX29URLEmailAnalyzer: Filters `UAX29URLEmailTokenizer` with `LowerCaseFilter` and `StopFilter`, using a list of English stop words.
UAX29URLEmailTokenizer: This class implements Word Break rules from the Unicode Text Segmentation algorithm, as specified in Unicode Standard Annex #29 URLs and email addresses are also tokenized according to the relevant RFCs.
UAX29URLEmailTokenizerFactory: Factory for `UAX29URLEmailTokenizer`.
UAX29URLEmailTokenizerImpl: This class implements Word Break rules from the Unicode Text Segmentation algorithm, as specified in Unicode Standard Annex #29 URLs and email addresses are also tokenized according to the relevant RFCs.

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

Fast, general-purpose grammar-based tokenizers.

- `ClassicTokenizer`: this class was formerly (prior to Lucene 3.1) named `StandardTokenizer`. (Its tokenization rules are not based on the Unicode Text Segmentation algorithm.) `ClassicAnalyzer` includes `ClassicTokenizer`, `LowerCaseFilter` and `StopFilter`.
- `UAX29URLEmailTokenizer`: implements the Word Break rules from the Unicode Text Segmentation algorithm, as specified in Unicode Standard Annex #29, except URLs and email addresses are also tokenized according to the relevant RFCs.
  `UAX29URLEmailAnalyzer` includes `UAX29URLEmailTokenizer`, `LowerCaseFilter` and `StopFilter`.

This Java package additionally contains `StandardAnalyzer` and `StandardTokenizer`, which are not visible here, because they moved to Lucene Core. The factories for those components (e.g., used in Solr) are still part of this module.