Interface PosixFileAttributes

All Superinterfaces:: BasicFileAttributes

public interface PosixFileAttributes extends BasicFileAttributes

File attributes associated with files on file systems used by operating systems that implement the Portable Operating System Interface (POSIX) family of standards.

The POSIX attributes of a file are retrieved using a PosixFileAttributeView by invoking its readAttributes method.

Since:: 1.7

Method Summary

Modifier and Type	Method	Description
`GroupPrincipal`	`group()`	Returns the group owner of the file.
`UserPrincipal`	`owner()`	Returns the owner of the file.
`Set<PosixFilePermission>`	`permissions()`	Returns the permissions of the file.

Methods declared in interface BasicFileAttributes

creationTime, fileKey, isDirectory, isOther, isRegularFile, isSymbolicLink, lastAccessTime, lastModifiedTime, size

Modifier and Type	Method	Description
`FileTime`	`creationTime()`	Returns the creation time.
`Object`	`fileKey()`	Returns an object that uniquely identifies the given file, or `null` if a file key is not available.
`boolean`	`isDirectory()`	Tells whether the file is a directory.
`boolean`	`isOther()`	Tells whether the file is something other than a regular file, directory, or symbolic link.
`boolean`	`isRegularFile()`	Tells whether the file is a regular file with opaque content.
`boolean`	`isSymbolicLink()`	Tells whether the file is a symbolic link.
`FileTime`	`lastAccessTime()`	Returns the time of last access.
`FileTime`	`lastModifiedTime()`	Returns the time of last modification.
`long`	`size()`	Returns the size of the file (in bytes).

Method Details

owner

UserPrincipal owner()

Returns the owner of the file.

Returns:

the file owner

See Also:

group

GroupPrincipal group()

Returns the group owner of the file.

Returns:

the file group owner

See Also:

permissions

Set<PosixFilePermission> permissions()

Returns the permissions of the file. The file permissions are returned as a set of PosixFilePermission elements. The returned set is a copy of the file permissions and is modifiable. This allows the result to be modified and passed to the setPermissions method to update the file's permissions.

Returns:

the file permissions

See Also:

© 1993, 2025, Oracle and/or its affiliates. All rights reserved.
Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
Various third party code in OpenJDK is licensed under different licenses (see Debian package).
Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.