OpenJDK 1.22 · java.io.FileSystem · APIdia, the JavaDoc alternative

Modifier and Type	Field and Description
public static final int	ACCESS_EXECUTE
public static final int	ACCESS_READ
public static final int	ACCESS_WRITE
public static final int	BA_DIRECTORY
public static final int	BA_EXISTS
public static final int	BA_HIDDEN
public static final int	BA_REGULAR
public static final int	SPACE_FREE
public static final int	SPACE_TOTAL
public static final int	SPACE_USABLE

Access	Constructor and Description
pack-priv	FileSystem()

Method Summary

Modifier and Type	Method and Description
public abstract String	canonicalize(String path)
public abstract boolean	checkAccess(File f, int access) Check whether the file or directory denoted by the given abstract pathname may be accessed by this process.
public abstract int	compare(File f1, File f2) Compare two abstract pathnames lexicographically.
public abstract boolean	createDirectory(File f) Create a new directory denoted by the given abstract pathname, returning `true` if and only if the operation succeeds.
public abstract boolean	createFileExclusively(String pathname) Create a new empty file with the given pathname.
public abstract boolean	delete(File f) Delete the file or directory denoted by the given abstract pathname, returning `true` if and only if the operation succeeds.
public abstract String	fromURIPath(String path) Post-process the given URI path string if necessary.
public abstract int	getBooleanAttributes(File f) Return the simple boolean attributes for the file or directory denoted by the given abstract pathname, or zero if it does not exist or some other I/O error occurs.
public abstract String	getDefaultParent() Return the parent pathname string to be used when the parent-directory argument in one of the two-argument File constructors is the empty pathname.
public abstract long	getLastModifiedTime(File f) Return the time at which the file or directory denoted by the given abstract pathname was last modified, or zero if it does not exist or some other I/O error occurs.
public abstract long	getLength(File f) Return the length in bytes of the file denoted by the given abstract pathname, or zero if it does not exist, is a directory, or some other I/O error occurs.
public abstract int	Returns: The maximum length of a file path component. getNameMax(String path) Retrieve the maximum length of a component of a file path.
public abstract char	getPathSeparator() Return the local filesystem's path-separator character.
public abstract char	getSeparator() Return the local filesystem's name-separator character.
public abstract long	getSpace(File f, int t)
public boolean	hasBooleanAttributes(File f, int attributes) Checks if all the given boolean attributes are true for the file or directory denoted by the given abstract pathname.
public abstract int	hashCode(File f) Compute the hash code of an abstract pathname.
public abstract boolean	isAbsolute(File f) Tell whether or not the given abstract pathname is absolute.
public abstract boolean	isInvalid(File f) Tell whether the given abstract pathname is invalid.
public abstract String[]	list(File f) List the elements of the directory denoted by the given abstract pathname.
public abstract File[]	listRoots() List the available filesystem roots.
public abstract String	normalize(String path) Convert the given pathname string to normal form.
public abstract int	prefixLength(String path) Compute the length of this pathname string's prefix.
public abstract boolean	rename(File f1, File f2) Rename the file or directory denoted by the first abstract pathname to the second abstract pathname, returning `true` if and only if the operation succeeds.
public abstract String	resolve(String parent, String child) Resolve the child pathname string against the parent.
public abstract String	resolve(File f) Resolve the given abstract pathname into absolute form.
public abstract boolean	setLastModifiedTime(File f, long time) Set the last-modified time of the file or directory denoted by the given abstract pathname, returning `true` if and only if the operation succeeds.
public abstract boolean	setPermission(File f, int access, boolean enable, boolean owneronly) Set on or off the access permission (to owner only or to all) to the file or directory denoted by the given abstract pathname, based on the parameters enable, access and oweronly.
public abstract boolean	setReadOnly(File f) Mark the file or directory denoted by the given abstract pathname as read-only, returning `true` if and only if the operation succeeds.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

ACCESS_EXECUTE	back to summary
public static final int ACCESS_EXECUTE Annotations @Native

ACCESS_READ	back to summary
public static final int ACCESS_READ Annotations @Native

ACCESS_WRITE	back to summary
public static final int ACCESS_WRITE Annotations @Native

BA_DIRECTORY	back to summary
public static final int BA_DIRECTORY Annotations @Native

BA_EXISTS	back to summary
public static final int BA_EXISTS Annotations @Native

BA_HIDDEN	back to summary
public static final int BA_HIDDEN Annotations @Native

BA_REGULAR	back to summary
public static final int BA_REGULAR Annotations @Native

SPACE_FREE	back to summary
public static final int SPACE_FREE Annotations @Native

SPACE_TOTAL	back to summary
public static final int SPACE_TOTAL Annotations @Native

SPACE_USABLE	back to summary
public static final int SPACE_USABLE Annotations @Native

FileSystem	back to summary
pack-priv FileSystem()

Method Detail

canonicalize	back to summary
public abstract String canonicalize(String path) throws IOException

checkAccess	back to summary
public abstract boolean checkAccess(File f, int access) Check whether the file or directory denoted by the given abstract pathname may be accessed by this process. The second argument specifies which access, ACCESS_READ, ACCESS_WRITE or ACCESS_EXECUTE, to check. Return false if access is denied or an I/O error occurs

compare	back to summary
public abstract int compare(File f1, File f2) Compare two abstract pathnames lexicographically.

createDirectory	back to summary
public abstract boolean createDirectory(File f) Create a new directory denoted by the given abstract pathname, returning `true` if and only if the operation succeeds.

createFileExclusively	back to summary
public abstract boolean createFileExclusively(String pathname) throws IOException Create a new empty file with the given pathname. Return `true` if the file was created and `false` if a file or directory with the given pathname already exists. Throw an IOException if an I/O error occurs.

delete	back to summary
public abstract boolean delete(File f) Delete the file or directory denoted by the given abstract pathname, returning `true` if and only if the operation succeeds.

fromURIPath	back to summary
public abstract String fromURIPath(String path) Post-process the given URI path string if necessary. This is used on win32, e.g., to transform "/c:/foo" into "c:/foo". The path string still has slash separators; code in the File class will translate them after this method returns.

getBooleanAttributes	back to summary
public abstract int getBooleanAttributes(File f) Return the simple boolean attributes for the file or directory denoted by the given abstract pathname, or zero if it does not exist or some other I/O error occurs.

getDefaultParent	back to summary
public abstract String getDefaultParent() Return the parent pathname string to be used when the parent-directory argument in one of the two-argument File constructors is the empty pathname.

getLastModifiedTime	back to summary
public abstract long getLastModifiedTime(File f) Return the time at which the file or directory denoted by the given abstract pathname was last modified, or zero if it does not exist or some other I/O error occurs.

getLength	back to summary
public abstract long getLength(File f) Return the length in bytes of the file denoted by the given abstract pathname, or zero if it does not exist, is a directory, or some other I/O error occurs.

getNameMax	back to summary
public abstract int getNameMax(String path) Retrieve the maximum length of a component of a file path. Returns:int The maximum length of a file path component.

getNameMax

back to summary

public abstract int getNameMax(String path)

Retrieve the maximum length of a component of a file path.

Returns:int: The maximum length of a file path component.

getPathSeparator	back to summary
public abstract char getPathSeparator() Return the local filesystem's path-separator character.

getSeparator	back to summary
public abstract char getSeparator() Return the local filesystem's name-separator character.

getSpace	back to summary
public abstract long getSpace(File f, int t)

hasBooleanAttributes	back to summary
public boolean hasBooleanAttributes(File f, int attributes) Checks if all the given boolean attributes are true for the file or directory denoted by the given abstract pathname. False if it does not exist or some other I/O error occurs.

hashCode	back to summary
public abstract int hashCode(File f) Compute the hash code of an abstract pathname.

isAbsolute	back to summary
public abstract boolean isAbsolute(File f) Tell whether or not the given abstract pathname is absolute.

isInvalid	back to summary
public abstract boolean isInvalid(File f) Tell whether the given abstract pathname is invalid.

list	back to summary
public abstract String[] list(File f) List the elements of the directory denoted by the given abstract pathname. Return an array of strings naming the elements of the directory if successful; otherwise, return `null`.

listRoots	back to summary
public abstract File[] listRoots() List the available filesystem roots.

normalize	back to summary
public abstract String normalize(String path) Convert the given pathname string to normal form. If the string is already in normal form then it is simply returned.

prefixLength	back to summary
public abstract int prefixLength(String path) Compute the length of this pathname string's prefix. The pathname string must be in normal form.

rename	back to summary
public abstract boolean rename(File f1, File f2) Rename the file or directory denoted by the first abstract pathname to the second abstract pathname, returning `true` if and only if the operation succeeds.

resolve	back to summary
public abstract String resolve(String parent, String child) Resolve the child pathname string against the parent. Both strings must be in normal form, and the result will be in normal form.

resolve	back to summary
public abstract String resolve(File f) Resolve the given abstract pathname into absolute form. Invoked by the getAbsolutePath and getCanonicalPath methods in the File class.

setLastModifiedTime	back to summary
public abstract boolean setLastModifiedTime(File f, long time) Set the last-modified time of the file or directory denoted by the given abstract pathname, returning `true` if and only if the operation succeeds.

setPermission	back to summary
public abstract boolean setPermission(File f, int access, boolean enable, boolean owneronly) Set on or off the access permission (to owner only or to all) to the file or directory denoted by the given abstract pathname, based on the parameters enable, access and oweronly.

setReadOnly	back to summary
public abstract boolean setReadOnly(File f) Mark the file or directory denoted by the given abstract pathname as read-only, returning `true` if and only if the operation succeeds.

pack-priv abstract Class FileSystem

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail