An object that configures how to copy or move a file.
An object to iterate over the entries in a directory.
An interface that is implemented by objects that decide if a directory entry should be accepted or filtered.
An object that configures how to open or create a file.
An object that may be used to locate a file in a file system.
This class consists exclusively of static methods that operate on files, directories, or other types of files.
Storage for files.
Provides an interface to a file system and is the factory for objects to access files and other objects in the file system.
Factory methods for file systems.
This class consists exclusively of static methods that return a
Defines the options as to how symbolic links are handled.
Defines the standard copy options.
Defines the standard open options.
Checked exception thrown when a file cannot be moved as an atomic file system operation.
Unchecked exception thrown when an attempt is made to invoke an operation on a file and the file system is closed.
Runtime exception thrown if an I/O error is encountered when iterating over the entries in a directory.
Checked exception thrown when a file system operation fails because a directory is not empty.
Checked exception thrown when an attempt is made to create a file or directory and a file of that name already exists.
Thrown when a file system operation fails on one or two files.
Unchecked exception thrown when path string cannot be converted into a
Checked exception thrown when an attempt is made to access a file that does not exist.
Checked exception thrown when a file system operation, intended for a directory, fails because the file is not a directory.
Unchecked exception thrown when an attempt is made to update an object associated with a
The java.nio.file package defines classes to access files and file
systems. The API to access file and file system attributes is defined in the
The following features of NIO are NOT supported by this subset:
GatheringByteChannels are not supported
FileSystemProviders are not supported; only the default provider is supported
DSYNCoptions are used when opening a file to require that updates to the file are written synchronously to the underlying storage device. In the case of the default filesystem, and the file resides on a local storage device, and the
seekablechannel is connected to a file that was opened with one of these options, then an invocation of the
writemethod is only guaranteed to return when all changes made to the file by that invocation have been written to the device. These options are useful for ensuring that critical information is not lost in the event of a system crash.
nullargument to a constructor or method of any class or interface in this package will cause a
NullPointerExceptionto be thrown. Additionally, invoking a method with a collection containing a
nullelement will cause a
NullPointerException, unless otherwise specified.
Unless otherwise noted, methods that attempt to access the file system
ClosedFileSystemException when invoked on
objects associated with a
FileSystem that has been
closed. Additionally, any methods
that attempt write access to a file system will throw
ReadOnlyFileSystemException when invoked on an object associated
FileSystem that only provides read-only
IOExceptionbe thrown when an I/O error occurs. In some cases, these methods define specific I/O exceptions for common cases. These exceptions, noted as optional specific exceptions, are thrown by the implementation where it can detect the specific error. Where the specific error cannot be detected then the more general
Copyright (c) 2014, Oracle and/or its affiliates. All Rights Reserved. Use of this specification is subject to license terms.