Stay organized with collections
Save and categorize content based on your preferences.
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
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 read-only FileSystem.
|
Interfaces
Classes
Enums
Exceptions
Content and code samples on this page are subject to the licenses described in the Content License. Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.
Last updated 2026-08-03 UTC.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2026-08-03 UTC."],[],[]]
