001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 * 017 */ 018 019package org.apache.commons.net.ftp; 020 021import java.util.Objects; 022 023/** 024 * Implements some simple FTPFileFilter classes. 025 * 026 * @since 2.2 027 */ 028public class FTPFileFilters { 029 030 /** 031 * Accepts all FTPFile entries, including null. 032 */ 033 public static final FTPFileFilter ALL = file -> true; 034 035 /** 036 * Accepts all non-null FTPFile entries. 037 */ 038 public static final FTPFileFilter NON_NULL = Objects::nonNull; 039 040 /** 041 * Accepts all (non-null) FTPFile directory entries. 042 */ 043 public static final FTPFileFilter DIRECTORIES = file -> file != null && file.isDirectory(); 044 045}