org.apache.wicket.util.file

Class Folder

java.lang.Object

java.io.File

org.apache.wicket.util.file.File

org.apache.wicket.util.file.Folder

All Implemented Interfaces:

Serializable, Comparable<File>, IModifiable

public class Folder
extends File

This folder subclass provides some type safety and extensibility for "files" that hold other files.

Author:

Jonathan Locke

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	Folder.FileFilter Filter for files
static interface	Folder.FolderFilter Filter for folders

Field Summary

Fields inherited from class java.io.File

pathSeparator, pathSeparatorChar, separator, separatorChar

Constructor Summary

Constructors

Constructor and Description
Folder(File file) Construct.
Folder(Folder parent, String child) Constructor.
Folder(String pathname) Constructor.
Folder(String parent, String child) Constructor.
Folder(URI uri) Constructor.

Method Summary

Modifier and Type	Method and Description
void	ensureExists() Does a mkdirs() on this folder if it does not exist.
Folder	folder(String name)
Bytes	freeDiskSpace()
File[]	getFiles()
File[]	getFiles(Folder.FileFilter filter)
Folder[]	getFolders() Gets all folders in this folder, except "." and ".."
Folder[]	getFolders(Folder.FolderFilter filter)
File[]	getNestedFiles()
File[]	getNestedFiles(Folder.FileFilter filter) Gets files in this folder matching a given filter recursively.
boolean	remove() Removes this folder and everything in it, recursively.
boolean	removeFiles() Removes all the files in this folder.

Methods inherited from class org.apache.wicket.util.file.File

file, getExtension, getParentFolder, inputStream, lastModifiedTime, outputStream, readObject, readString, sync, toQuotedString, write, write, write, writeObject

Methods inherited from class java.io.File

canExecute, canRead, canWrite, compareTo, createNewFile, createTempFile, createTempFile, delete, deleteOnExit, equals, exists, getAbsoluteFile, getAbsolutePath, getCanonicalFile, getCanonicalPath, getFreeSpace, getName, getParent, getParentFile, getPath, getTotalSpace, getUsableSpace, hashCode, isAbsolute, isDirectory, isFile, isHidden, lastModified, length, list, list, listFiles, listFiles, listFiles, listRoots, mkdir, mkdirs, renameTo, setExecutable, setExecutable, setLastModified, setReadable, setReadable, setReadOnly, setWritable, setWritable, toPath, toString, toURI, toURL

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Folder

public Folder(Folder parent,
              String child)

Constructor.

Parameters:

parent - parent

child - child

Folder

public Folder(File file)

Construct.

Parameters:

file - File

Folder

public Folder(String pathname)

Constructor.

Parameters:

pathname - path name

Folder

public Folder(String parent,
              String child)

Constructor.

Parameters:

parent - parent

child - child

Folder

public Folder(URI uri)

Constructor.

Parameters:

uri - folder uri

Method Detail

ensureExists

public void ensureExists()
                  throws IOException

Does a mkdirs() on this folder if it does not exist. If the folder cannot be created, an IOException is thrown.

Throws:

IOException - Thrown if folder cannot be created

folder

public Folder folder(String name)

Parameters:

name - Name of child folder

Returns:

Child file object

freeDiskSpace

public Bytes freeDiskSpace()

Returns:

Disk space free on the partition where this folder lives

getFiles

public File[] getFiles()

Returns:

Files in this folder

getNestedFiles

public File[] getNestedFiles()

Returns:

All files nested within this folder

getNestedFiles

public File[] getNestedFiles(Folder.FileFilter filter)

Gets files in this folder matching a given filter recursively.

Parameters:

filter - The filter

Returns:

The list of files

getFiles

public File[] getFiles(Folder.FileFilter filter)

Parameters:

filter - File filter

Returns:

Files

getFolders

public Folder[] getFolders()

Gets all folders in this folder, except "." and ".."

Returns:

Folders

getFolders

public Folder[] getFolders(Folder.FolderFilter filter)

Parameters:

filter - Folder filter

Returns:

Folders

remove

public boolean remove()

Removes this folder and everything in it, recursively. A best effort is made to remove nested folders and files in depth-first order.

Overrides:

remove in class File

Returns:

True if the folder was successfully removed

See Also:

File.delete()

removeFiles

public boolean removeFiles()

Removes all the files in this folder.

Returns:

True if any files were successfully removed