DosFileAttributeView

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public interface DosFileAttributeView implements BasicFileAttributeView

A file attribute view that provides a view of the legacy "DOS" file attributes. These attributes are supported by file systems such as the File Allocation Table (FAT) format commonly used in consumer devices.

A DosFileAttributeView is a BasicFileAttributeView that additionally supports access to the set of DOS attribute flags that are used to indicate if the file is read-only, hidden, a system file, or archived.

Where dynamic access to file attributes is required, the attributes supported by this attribute view are as defined by BasicFileAttributeView, and in addition, the following attributes are supported:

Name Type
readonly Boolean
hidden Boolean
system Boolean
archive Boolean

The getAttribute method may be used to read any of these attributes, or any of the attributes defined by BasicFileAttributeView as if by invoking the readAttributes() method.

The setAttribute method may be used to update the file's last modified time, last access time or create time attributes as defined by BasicFileAttributeView. It may also be used to update the DOS attributes as if by invoking the setReadOnly, setHidden, setSystem, and setArchive methods respectively.

Public Method Summary

abstract String
name()
Returns the name of the attribute view.
abstract DosFileAttributes
readAttributes()
Reads the basic file attributes as a bulk operation.
abstract void
setArchive(boolean value)
Updates the value of the archive attribute.
abstract void
setHidden(boolean value)
Updates the value of the hidden attribute.
abstract void
setReadOnly(boolean value)
Updates the value of the read-only attribute.
abstract void
setSystem(boolean value)
Updates the value of the system attribute.

Inherited Method Summary

Public Methods

public abstract String name ()

Returns the name of the attribute view. Attribute views of this type have the name "dos".

Returns
  • the name of the attribute view

public abstract DosFileAttributes readAttributes ()

Reads the basic file attributes as a bulk operation.

It is implementation specific if all file attributes are read as an atomic operation with respect to other file system operations.

Returns
  • the file attributes

public abstract void setArchive (boolean value)

Updates the value of the archive attribute.

It is implementation specific if the attribute can be updated as an atomic operation with respect to other file system operations. An implementation may, for example, require to read the existing value of the DOS attribute in order to update this attribute.

Parameters
value the new value of the attribute
Throws
IOException if an I/O error occurs
SecurityException In the case of the default, and a security manager is installed, its checkWrite method is invoked to check write access to the file

public abstract void setHidden (boolean value)

Updates the value of the hidden attribute.

It is implementation specific if the attribute can be updated as an atomic operation with respect to other file system operations. An implementation may, for example, require to read the existing value of the DOS attribute in order to update this attribute.

Parameters
value the new value of the attribute
Throws
IOException if an I/O error occurs
SecurityException In the case of the default, and a security manager is installed, its checkWrite method is invoked to check write access to the file

public abstract void setReadOnly (boolean value)

Updates the value of the read-only attribute.

It is implementation specific if the attribute can be updated as an atomic operation with respect to other file system operations. An implementation may, for example, require to read the existing value of the DOS attribute in order to update this attribute.

Parameters
value the new value of the attribute
Throws
IOException if an I/O error occurs
SecurityException In the case of the default, and a security manager is installed, its checkWrite method is invoked to check write access to the file

public abstract void setSystem (boolean value)

Updates the value of the system attribute.

It is implementation specific if the attribute can be updated as an atomic operation with respect to other file system operations. An implementation may, for example, require to read the existing value of the DOS attribute in order to update this attribute.

Parameters
value the new value of the attribute
Throws
IOException if an I/O error occurs
SecurityException In the case of the default, and a security manager is installed, its checkWrite method is invoked to check write access to the file