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1   /*
2    * Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.
3    * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4    *
5    * This code is free software; you can redistribute it and/or modify it
6    * under the terms of the GNU General Public License version 2 only, as
7    * published by the Free Software Foundation.  Oracle designates this
8    * particular file as subject to the "Classpath" exception as provided
9    * by Oracle in the LICENSE file that accompanied this code.
10   *
11   * This code is distributed in the hope that it will be useful, but WITHOUT
12   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14   * version 2 for more details (a copy is included in the LICENSE file that
15   * accompanied this code).
16   *
17   * You should have received a copy of the GNU General Public License version
18   * 2 along with this work; if not, write to the Free Software Foundation,
19   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20   *
21   * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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24   */
25  
26  package java.io;
27  
28  
29  /**
30   * A filter for abstract pathnames.
31   *
32   * <p> Instances of this interface may be passed to the <code>{@link
33   * File#listFiles(java.io.FileFilter) listFiles(FileFilter)}</code> method
34   * of the <code>{@link java.io.File}</code> class.
35   *
36   * @since 1.2
37   */
38  @FunctionalInterface
39  public interface FileFilter {
40  
41      /**
42       * Tests whether or not the specified abstract pathname should be
43       * included in a pathname list.
44       *
45       * @param  pathname  The abstract pathname to be tested
46       * @return  <code>true</code> if and only if <code>pathname</code>
47       *          should be included
48       */
49      boolean accept(File pathname);
50  }