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java.nio.file

Interfaces

CopyOption	An object that configures how to copy or move a file.
DirectoryStream<T>	An object to iterate over the entries in a directory.
DirectoryStream.Filter<T>	An interface that is implemented by objects that decide if a directory entry should be accepted or filtered.
FileVisitor<T>	A visitor of files.
OpenOption	An object that configures how to open or create a file.
Path	An object that may be used to locate a file in a file system.
PathMatcher	An interface that is implemented by objects that perform match operations on paths.
SecureDirectoryStream<T>	A `DirectoryStream` that defines operations on files that are located relative to an open directory.
Watchable	An object that may be registered with a watch service so that it can be watched for changes and events.
WatchEvent<T>	An event or a repeated event for an object that is registered with a `WatchService`.
WatchEvent.Kind<T>	An event kind, for the purposes of identification.
WatchEvent.Modifier	An event modifier that qualifies how a `Watchable` is registered with a `WatchService`.
WatchKey	A token representing the registration of a `Watchable` object with a `WatchService`.
WatchService	A watch service that watches registered objects for changes and events.

Classes

Files	This class consists exclusively of static methods that operate on files, directories, or other types of files.
FileStore	Storage for files.
FileSystem	Provides an interface to a file system and is the factory for objects to access files and other objects in the file system.
FileSystems	Factory methods for file systems.
LinkPermission	The `Permission` class for link creation operations.
Paths	This class consists exclusively of static methods that return a `Path` by converting a path string or `URI`.
SimpleFileVisitor<T>	A simple visitor of files with default behavior to visit all files and to re-throw I/O errors.
StandardWatchEventKinds	Defines the standard event kinds.

Enums

AccessMode	Defines access modes used to test the accessibility of a file.
FileVisitOption	Defines the file tree traversal options.
FileVisitResult	The result type of a `FileVisitor`.
LinkOption	Defines the options as to how symbolic links are handled.
StandardCopyOption	Defines the standard copy options.
StandardOpenOption	Defines the standard open options.

Exceptions

AccessDeniedException	Checked exception thrown when a file system operation is denied, typically due to a file permission or other access check.
AtomicMoveNotSupportedException	Checked exception thrown when a file cannot be moved as an atomic file system operation.
ClosedDirectoryStreamException	Unchecked exception thrown when an attempt is made to invoke an operation on a directory stream that is closed.
ClosedFileSystemException	Unchecked exception thrown when an attempt is made to invoke an operation on a file and the file system is closed.
ClosedWatchServiceException	Unchecked exception thrown when an attempt is made to invoke an operation on a watch service that is closed.
DirectoryIteratorException	Runtime exception thrown if an I/O error is encountered when iterating over the entries in a directory.
DirectoryNotEmptyException	Checked exception thrown when a file system operation fails because a directory is not empty.
FileAlreadyExistsException	Checked exception thrown when an attempt is made to create a file or directory and a file of that name already exists.
FileSystemAlreadyExistsException	Runtime exception thrown when an attempt is made to create a file system that already exists.
FileSystemException	Thrown when a file system operation fails on one or two files.
FileSystemLoopException	Checked exception thrown when a file system loop, or cycle, is encountered.
FileSystemNotFoundException	Runtime exception thrown when a file system cannot be found.
InvalidPathException	Unchecked exception thrown when path string cannot be converted into a `Path` because the path string contains invalid characters, or the path string is invalid for other file system specific reasons.
NoSuchFileException	Checked exception thrown when an attempt is made to access a file that does not exist.
NotDirectoryException	Checked exception thrown when a file system operation, intended for a directory, fails because the file is not a directory.
NotLinkException	Checked exception thrown when a file system operation fails because a file is not a symbolic link.
ProviderMismatchException	Unchecked exception thrown when an attempt is made to invoke a method on an object created by one file system provider with a parameter created by a different file system provider.
ProviderNotFoundException	Runtime exception thrown when a provider of the required type cannot be found.
ReadOnlyFileSystemException	Unchecked exception thrown when an attempt is made to update an object associated with a `FileSystem#isReadOnly()` `FileSystem`.