/* * Copyright (c) 2007, 2017, 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. */ /** * Interfaces and classes providing access to file and file system attributes. * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Attribute views
Attribute viewsDescription
{@link java.nio.file.attribute.AttributeView}Can read or update non-opaque values associated with objects in a file system
* {@link java.nio.file.attribute.FileAttributeView}Can read or update file attributes
* * {@link java.nio.file.attribute.BasicFileAttributeView}Can read or update a basic set of file attributes
* * {@link java.nio.file.attribute.PosixFileAttributeView}Can read or update POSIX defined file attributes
* * {@link java.nio.file.attribute.DosFileAttributeView}Can read or update FAT file attributes
* * {@link java.nio.file.attribute.FileOwnerAttributeView}Can read or update the owner of a file
* * {@link java.nio.file.attribute.AclFileAttributeView}Can read or update Access Control Lists
* * {@link java.nio.file.attribute.UserDefinedFileAttributeView}Can read or update user-defined file attributes
* {@link java.nio.file.attribute.FileStoreAttributeView}Can read or update file system attributes
* *

An attribute view provides a read-only or updatable view of the non-opaque * values, or metadata, associated with objects in a file system. * The {@link java.nio.file.attribute.FileAttributeView} interface is * extended by several other interfaces that provide views to specific sets of file * attributes. {@code FileAttributeViews} are selected by invoking the {@link * java.nio.file.Files#getFileAttributeView} method with a * type-token to identify the required view. Views can also be identified * by name. The {@link java.nio.file.attribute.FileStoreAttributeView} interface * provides access to file store attributes. A {@code FileStoreAttributeView} of * a given type is obtained by invoking the {@link * java.nio.file.FileStore#getFileStoreAttributeView} method. * *

The {@link java.nio.file.attribute.BasicFileAttributeView} * class defines methods to read and update a basic set of file * attributes that are common to many file systems. * *

The {@link java.nio.file.attribute.PosixFileAttributeView} * interface extends {@code BasicFileAttributeView} by defining methods * to access the file attributes commonly used by file systems and operating systems * that implement the Portable Operating System Interface (POSIX) family of * standards. * *

The {@link java.nio.file.attribute.DosFileAttributeView} * class extends {@code BasicFileAttributeView} by defining methods to * access the legacy "DOS" file attributes supported on file systems such as File * Allocation Tabl (FAT), commonly used in consumer devices. * *

The {@link java.nio.file.attribute.AclFileAttributeView} * class defines methods to read and write the Access Control List (ACL) * file attribute. The ACL model used by this file attribute view is based * on the model defined by * RFC 3530: Network File System (NFS) version 4 Protocol. * *

In addition to attribute views, this package also defines classes and * interfaces that are used when accessing attributes: * *

* * *

Unless otherwise noted, passing a {@code null} argument to a constructor * or method in any class or interface in this package will cause a {@link * java.lang.NullPointerException NullPointerException} to be thrown. * * @since 1.7 */ package java.nio.file.attribute;