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 package org.apache.commons.net.ftp; 19 20 import java.util.Objects; 21 22 /** 23 * Implements some simple FTPFileFilter classes. 24 * 25 * @since 2.2 26 */ 27 public class FTPFileFilters { 28 29 /** 30 * Accepts all FTPFile entries, including null. 31 */ 32 public static final FTPFileFilter ALL = file -> true; 33 34 /** 35 * Accepts all non-null FTPFile entries. 36 */ 37 public static final FTPFileFilter NON_NULL = Objects::nonNull; 38 39 /** 40 * Accepts all (non-null) FTPFile directory entries. 41 */ 42 public static final FTPFileFilter DIRECTORIES = file -> file != null && file.isDirectory(); 43 44 }