// 
//     Licensed to the Apache Software Foundation (ASF) under one
//     or more contributor license agreements.  See the NOTICE file
//     distributed with this work for additional information
//     regarding copyright ownership.  The ASF licenses this file
//     to you under the Apache License, Version 2.0 (the
//     "License"); you may not use this file except in compliance
//     with the License.  You may obtain a copy of the License at
// 
//       http://www.apache.org/licenses/LICENSE-2.0
// 
//     Unless required by applicable law or agreed to in writing,
//     software distributed under the License is distributed on an
//     "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
//     KIND, either express or implied.  See the License for the
//     specific language governing permissions and limitations
//     under the License.
//

= DevFaqFileObject
:jbake-type: wiki
:jbake-tags: wiki, devfaq, needsreview
:jbake-status: published
:keywords: Apache NetBeans wiki DevFaqFileObject
:description: Apache NetBeans wiki DevFaqFileObject
:toc: left
:toc-title:
:syntax: true

=== What is a FileObject?

FileObjects are _virtual files_ which live inside a link:DevFaqFileSystem.asciidoc[FileSystem ].  They
may represent a file on disk - or anything else walks and talks like a file, or can be made to - such as a file
on a remote FTP server, a file entry in a JAR file, an entry in an XML file, etc.

FileObjects differ from `java.io.File` in certain ways:

* You don't generally ever have a FileObject representing a file that doesn't really exist (if you think a FileObject may have been deleted, check `isValid()`)
* You can listen for changes on FileObjects
* `FileObjects` can have key-value pairs of ad-hoc link:DevFaqFileAttributes.asciidoc[attributes ] associated with them

They are part of the link:http://bits.netbeans.org/dev/javadoc/org-openide-filesystems/org/openide/filesystems/doc-files/api.html[Filesystems API];
the javadoc for FileObject can be found link:http://bits.netbeans.org/dev/javadoc/org-openide-filesystems/org/openide/filesystems/FileObject.html[here].

=== Apache Migration Information

The content in this page was kindly donated by Oracle Corp. to the
Apache Software Foundation.

This page was exported from link:http://wiki.netbeans.org/DevFaqFileObject[http://wiki.netbeans.org/DevFaqFileObject] , 
that was last modified by NetBeans user Tboudreau 
on 2010-02-19T01:44:39Z.


*NOTE:* This document was automatically converted to the AsciiDoc format on 2018-02-07, and needs to be reviewed.