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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   */
18  
19  package org.apache.commons.net.ftp;
20  
21  /**
22   * Implements some simple FTPFileFilter classes.
23   * @since 2.2
24   */
25  public class FTPFileFilters {
26  
27      /**
28       * Accepts all FTPFile entries, including null.
29       */
30      public static final FTPFileFilter ALL = new FTPFileFilter() {
31  //        @Override
32          public boolean accept(FTPFile file) {
33              return true;
34          }
35      };
36  
37      /**
38       * Accepts all non-null FTPFile entries.
39       */
40      public static final FTPFileFilter NON_NULL = new FTPFileFilter() {
41  //        @Override
42          public boolean accept(FTPFile file) {
43              return file != null;
44          }
45      };
46  
47      /**
48       * Accepts all (non-null) FTPFile directory entries.
49       */
50      public static final FTPFileFilter DIRECTORIES = new FTPFileFilter() {
51  //        @Override
52          public boolean accept(FTPFile file) {
53              return file != null && file.isDirectory();
54          }
55      };
56  
57  }