https://openjdk.java.net/ 
/*
 * Copyright (c) 1994, 2013, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package java.io;


Instances of classes that implement this interface are used to
filter filenames. These instances are used to filter directory
listings in the list method of class
File, and by the Abstract Window Toolkit's file
dialog component.

Author: Arthur van Hoff,  Jonathan Payne
See Also:
Since:  1.0
/**
 * Instances of classes that implement this interface are used to
 * filter filenames. These instances are used to filter directory
 * listings in the <code>list</code> method of class
 * <code>File</code>, and by the Abstract Window Toolkit's file
 * dialog component.
 *
 * @author  Arthur van Hoff
 * @author  Jonathan Payne
 * @see     java.awt.FileDialog#setFilenameFilter(java.io.FilenameFilter)
 * @see     java.io.File
 * @see     java.io.File#list(java.io.FilenameFilter)
 * @since   1.0
 */
@FunctionalInterface
public interface FilenameFilter {
    
Tests if a specified file should be included in a file list.

Params:
  • dir –    the directory in which the file was found.
  • name –   the name of the file.
Returns: true if and only if the name should be
included in the file list; false otherwise.
/**
     * Tests if a specified file should be included in a file list.
     *
     * @param   dir    the directory in which the file was found.
     * @param   name   the name of the file.
     * @return  <code>true</code> if and only if the name should be
     * included in the file list; <code>false</code> otherwise.
     */
    boolean accept(File dir, String name);
}