Package org.apache.wicket.util.file

Class File

java.lang.Object

java.io.File

org.apache.wicket.util.file.File

All Implemented Interfaces:

Serializable, Comparable<File>, IModifiable

Direct Known Subclasses:

Folder

public class File
extends File
implements IModifiable

Simple extension of File that adds an implementation of IModifiable for files. This allows the ModificationWatcher class to watch files for modification. The IModifiable.lastModifiedTime() method also returns a Time object with a more convenient API than either Date or a value in milliseconds.

Author:

Jonathan Locke

See Also:

• Serialized Form

Field Summary

Fields inherited from class java.io.File

pathSeparator, pathSeparatorChar, separator, separatorChar

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method	Description
File	file(String name)
String	getExtension()
Folder	getParentFolder()
InputStream	inputStream()
Instant	lastModifiedTime()	Returns a Time object representing the most recent time this file was modified.
OutputStream	outputStream()	Creates a buffered output stream that writes to this file.
Object	readObject()
String	readString()
boolean	remove()
void	sync()	Force contents of file to physical storage
String	toQuotedString()
int	write(InputStream input)	Writes the given input stream to this file
void	write(String string)	Write the given string to this file
int	write(File file)	Writes the given file to this one
void	writeObject(Serializable object)

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 Details

File

public File(File parent,
 String child)

Constructor.

Parameters:

parent - parent

child - child

File

public File(File parent,
 String child)

Construct.

Parameters:

parent - parent

child - child

File

public File(File file)

Construct.

Parameters:

file - File from java.io package

File

public File(String pathname)

Constructor.

Parameters:

pathname - path name

File

public File(String parent,
 String child)

Constructor.

Parameters:

parent - parent

child - child

File

public File(URI uri)

Constructor.

Parameters:

uri - file uri

Method Details

file

public File file(String name)

Parameters:

name - Name of child file

Returns:

Child file object

getExtension

public String getExtension()

Returns:

File extension (whatever is after the last '.' in the file name)

getParentFolder

public Folder getParentFolder()

Returns:

Parent folder

inputStream

public InputStream inputStream()
                        throws FileNotFoundException

Returns:

Input stream that reads this file

Throws:

FileNotFoundException - Thrown if the file cannot be found

lastModifiedTime

public Instant lastModifiedTime()

Returns a Time object representing the most recent time this file was modified.

Specified by:

lastModifiedTime in interface IModifiable

Returns:

This file's lastModified() value as a Time object or null if that information is not available

outputStream

public OutputStream outputStream()
                          throws FileNotFoundException

Creates a buffered output stream that writes to this file. If the parent folder does not yet exist, creates all necessary folders in the path.

Returns:

Output stream that writes to this file

Throws:

FileNotFoundException - Thrown if the file cannot be found

readString

public String readString()
                  throws IOException

Returns:

String read from this file

Throws:

IOException

readObject

public Object readObject()
                  throws IOException,
ClassNotFoundException

Returns:

Object read from serialization file

Throws:

IOException

ClassNotFoundException

writeObject

public void writeObject(Serializable object)
                 throws IOException

Parameters:

object - Object to write to this file

Throws:

IOException

remove

public boolean remove()

Returns:

True if the file was removed

See Also:

• File.delete()

sync

public void sync()
          throws IOException

Force contents of file to physical storage

Throws:

IOException

toQuotedString

public String toQuotedString()

Returns:

This file in double quotes (useful for passing to commands and tools that have issues with spaces in filenames)

write

public int write(File file)
          throws IOException

Writes the given file to this one

Parameters:

file - The file to copy

Returns:

number of bytes written

Throws:

IOException

write

public int write(InputStream input)
          throws IOException

Writes the given input stream to this file

Parameters:

input - The input

Returns:

Number of bytes written

Throws:

IOException

write

public void write(String string)
           throws IOException

Write the given string to this file

Parameters:

string - The string to write

Throws:

IOException