# java.nio.file.attribute # java.nio.file.attribute ## Interfaces |-------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [AclFileAttributeView](https://developer.android.com/reference/kotlin/java/nio/file/attribute/AclFileAttributeView) | A file attribute view that supports reading or updating a file's Access Control Lists (ACL) or file owner attributes. | | [AttributeView](https://developer.android.com/reference/kotlin/java/nio/file/attribute/AttributeView) | An object that provides a read-only or updatable*view*of non-opaque values associated with an object in a filesystem. | | [BasicFileAttributes](https://developer.android.com/reference/kotlin/java/nio/file/attribute/BasicFileAttributes) | Basic attributes associated with a file in a file system. | | [BasicFileAttributeView](https://developer.android.com/reference/kotlin/java/nio/file/attribute/BasicFileAttributeView) | A file attribute view that provides a view of a*basic set*of file attributes common to many file systems. | | [DosFileAttributes](https://developer.android.com/reference/kotlin/java/nio/file/attribute/DosFileAttributes) | File attributes associated with a file in a file system that supports legacy "DOS" attributes. | | [DosFileAttributeView](https://developer.android.com/reference/kotlin/java/nio/file/attribute/DosFileAttributeView) | A file attribute view that provides a view of the legacy "DOS" file attributes. | | [FileAttribute](https://developer.android.com/reference/kotlin/java/nio/file/attribute/FileAttribute) | An object that encapsulates the value of a file attribute that can be set atomically when creating a new file or directory by invoking the[createFile](https://developer.android.com/reference/kotlin/java/nio/file/Files.html#createFile(java.nio.file.Path,%20java.nio.file.attribute.FileAttribute))or[createDirectory](https://developer.android.com/reference/kotlin/java/nio/file/Files.html#createDirectory(java.nio.file.Path,%20java.nio.file.attribute.FileAttribute))methods. | | [FileAttributeView](https://developer.android.com/reference/kotlin/java/nio/file/attribute/FileAttributeView) | An attribute view that is a read-only or updatable view of non-opaque values associated with a file in a filesystem. | | [FileOwnerAttributeView](https://developer.android.com/reference/kotlin/java/nio/file/attribute/FileOwnerAttributeView) | A file attribute view that supports reading or updating the owner of a file. | | [FileStoreAttributeView](https://developer.android.com/reference/kotlin/java/nio/file/attribute/FileStoreAttributeView) | An attribute view that is a read-only or updatable view of the attributes of a[java.nio.file.FileStore](https://developer.android.com/reference/kotlin/java/nio/file/FileStore.html#). | | [GroupPrincipal](https://developer.android.com/reference/kotlin/java/nio/file/attribute/GroupPrincipal) | A`UserPrincipal`representing a*group identity*, used to determine access rights to objects in a file system. | | [PosixFileAttributes](https://developer.android.com/reference/kotlin/java/nio/file/attribute/PosixFileAttributes) | File attributes associated with files on file systems used by operating systems that implement the Portable Operating System Interface (POSIX) family of standards. | | [PosixFileAttributeView](https://developer.android.com/reference/kotlin/java/nio/file/attribute/PosixFileAttributeView) | A file attribute view that provides a view of the file attributes commonly associated with files on file systems used by operating systems that implement the Portable Operating System Interface (POSIX) family of standards. | | [UserDefinedFileAttributeView](https://developer.android.com/reference/kotlin/java/nio/file/attribute/UserDefinedFileAttributeView) | A file attribute view that provides a view of a file's user-defined attributes, sometimes known as*extended attributes*. | | [UserPrincipal](https://developer.android.com/reference/kotlin/java/nio/file/attribute/UserPrincipal) | A`Principal`representing an identity used to determine access rights to objects in a file system. | ## Classes |---------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [AclEntry](https://developer.android.com/reference/kotlin/java/nio/file/attribute/AclEntry) | An entry in an access control list (ACL). | | [FileTime](https://developer.android.com/reference/kotlin/java/nio/file/attribute/FileTime) | Represents the value of a file's time stamp attribute. | | [PosixFilePermissions](https://developer.android.com/reference/kotlin/java/nio/file/attribute/PosixFilePermissions) | This class consists exclusively of static methods that operate on sets of[PosixFilePermission](https://developer.android.com/reference/kotlin/java/nio/file/attribute/PosixFilePermission)objects. | | [UserPrincipalLookupService](https://developer.android.com/reference/kotlin/java/nio/file/attribute/UserPrincipalLookupService) | An object to lookup user and group principals by name. | ## Exceptions |-----------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [UserPrincipalNotFoundException](https://developer.android.com/reference/kotlin/java/nio/file/attribute/UserPrincipalNotFoundException) | Checked exception thrown when a lookup of[UserPrincipal](https://developer.android.com/reference/kotlin/java/nio/file/attribute/UserPrincipal)fails because the principal does not exist. | ## Enums |-------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [AclEntryFlag](https://developer.android.com/reference/kotlin/java/nio/file/attribute/AclEntryFlag) | Defines the flags for used by the flags component of an ACL[entry](https://developer.android.com/reference/kotlin/java/nio/file/attribute/AclEntry). | | [AclEntryPermission](https://developer.android.com/reference/kotlin/java/nio/file/attribute/AclEntryPermission) | Defines the permissions for use with the permissions component of an ACL[entry](https://developer.android.com/reference/kotlin/java/nio/file/attribute/AclEntry). | | [AclEntryType](https://developer.android.com/reference/kotlin/java/nio/file/attribute/AclEntryType) | A typesafe enumeration of the access control entry types. | | [PosixFilePermission](https://developer.android.com/reference/kotlin/java/nio/file/attribute/PosixFilePermission) | Defines the bits for use with the[permissions](https://developer.android.com/reference/kotlin/java/nio/file/attribute/PosixFileAttributes#permissions())attribute. |