1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package org.apache.commons.functor.example.lines;
18  
19  import java.util.StringTokenizer;
20  
21  import org.apache.commons.functor.UnaryFunction;
22  
23  /**
24   * @version $Revision: 665786 $ $Date: 2008-06-09 19:17:39 +0200 (Mon, 09 Jun 2008) $
25   * @author Rodney Waldhoff
26   */
27  public class WordCount implements UnaryFunction<String, Integer> {
28      public Integer evaluate(String obj) {
29          return new StringTokenizer(obj).countTokens();
30      }
31  
32      public static WordCount instance() {
33          return INSTANCE;
34      }
35  
36      private static final WordCount INSTANCE = new WordCount();
37  }