PosixFileAttributes

AI-generated Key Takeaways

• PosixFileAttributes provides access to file attributes specific to POSIX-compliant file systems, including owner, group, and permissions.

• It extends BasicFileAttributes, inheriting standard file attributes like size, creation time, and modification time.

• File attributes are retrieved using a PosixFileAttributeView object by invoking its readAttributes() method.

• The permissions method returns a modifiable set of PosixFilePermission elements that can be used to update the file's permissions.

public interface PosixFileAttributes implements 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.

Public Method Summary

abstract GroupPrincipal	group() Returns the group owner of the file.
abstract UserPrincipal	owner() Returns the owner of the file.
abstract Set<PosixFilePermission>	permissions() Returns the permissions of the file.

Inherited Method Summary

From interface java.nio.file.attribute.BasicFileAttributes

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

Public Methods

public abstract GroupPrincipal group ()

Returns the group owner of the file.

Returns

• the file group owner

See Also

• PosixFileAttributeView.setGroup(GroupPrincipal)

public abstract UserPrincipal owner ()

Returns the owner of the file.

Returns

• the file owner

See Also

• FileOwnerAttributeView.setOwner(UserPrincipal)

public abstract 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

• PosixFileAttributeView.setPermissions(Set)