https://lucene.apache.org/lucene-parent/lucene-core: Apache Lucene Java Core (The Apache Software Foundation) 
/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */


Fast, general-purpose grammar-based tokenizer StandardTokenizer implements the Word Break rules from the Unicode Text Segmentation algorithm, as specified in Unicode Standard Annex #29.
Unlike UAX29URLEmailTokenizer from the analysis module, URLs and email addresses are
not tokenized as single tokens, but are instead split up into 
tokens according to the UAX#29 word break rules.

 StandardAnalyzer includes StandardTokenizer, LowerCaseFilter and StopFilter. 
/**
 * Fast, general-purpose grammar-based tokenizer {@link org.apache.lucene.analysis.standard.StandardTokenizer}
 * implements the Word Break rules from the Unicode Text Segmentation algorithm, as specified in 
 * <a href="http://unicode.org/reports/tr29/">Unicode Standard Annex #29</a>.
 * Unlike <code>UAX29URLEmailTokenizer</code> from the analysis module, URLs and email addresses are
 * <b>not</b> tokenized as single tokens, but are instead split up into 
 * tokens according to the UAX#29 word break rules.
 * <br>
 * {@link org.apache.lucene.analysis.standard.StandardAnalyzer StandardAnalyzer} includes
 * {@link org.apache.lucene.analysis.standard.StandardTokenizer StandardTokenizer},
 * {@link org.apache.lucene.analysis.LowerCaseFilter LowerCaseFilter}
 * and {@link org.apache.lucene.analysis.StopFilter StopFilter}.
 */

package org.apache.lucene.analysis.standard;