code: /**
   * boilerpipe
   *
   * Copyright (c) 2009, 2014 Christian Kohlschütter
   *
   * The author 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.
   */
  package com.kohlschutter.boilerpipe.extractors;
  
  import com.kohlschutter.boilerpipe.BoilerpipeExtractor;
  
  /**
   * Provides quick access to common {@link BoilerpipeExtractor}s.
   */
  public final class CommonExtractors {
    private CommonExtractors() {
    }
  
    /**
     * Works very well for most types of Article-like HTML.
     */
    public static final ArticleExtractor ARTICLE_EXTRACTOR = ArticleExtractor.INSTANCE;
  
    /**
     * Usually worse than {@link ArticleExtractor}, but simpler/no heuristics.
     */
    public static final DefaultExtractor DEFAULT_EXTRACTOR = DefaultExtractor.INSTANCE;
  
    /**
     * Like {@link DefaultExtractor}, but keeps the largest text block only.
     */
    public static final LargestContentExtractor LARGEST_CONTENT_EXTRACTOR =
        LargestContentExtractor.INSTANCE;
  
    /**
     * Trained on krdwrd Canola (different definition of "boilerplate"). You may give it a try.
     */
    public static final CanolaExtractor CANOLA_EXTRACTOR = CanolaExtractor.INSTANCE;
  
    /**
     * Dummy Extractor; should return the input text. Use this to double-check that your problem is
     * within a particular {@link BoilerpipeExtractor}, or somewhere else.
     */
    public static final KeepEverythingExtractor KEEP_EVERYTHING_EXTRACTOR =
        KeepEverythingExtractor.INSTANCE;
  }
  