Package org.deltava.util

Class FileUtils

java.lang.Object

org.deltava.util.FileUtils

public class FileUtils
extends Object

A utility class for filesystem functions.

Since:

4.2

Version:

10.0

Author:

Luke

Field Summary

Fields

Modifier and Type	Field	Description
static final FilenameFilter	ACCEPT_ALL
static final DirectoryStream.Filter<Path>	IS_DIR
static final DirectoryStream.Filter<Path>	IS_FILE

Method Summary

Modifier and Type	Method	Description
static FilenameFilter	fileFilter(String prefix, String ext)	Utility method to get filenames with a particular prefix and extension.
static File	findNewest(String path, FilenameFilter ff)	Returns the newest file in a directory.
static void	setOwner(File f, String owner, String group)	Sets the owner and group membership for a file.
static void	setPermissions(File f, String... permissions)	Sets the permissions for a file.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

ACCEPT_ALL

public static final FilenameFilter ACCEPT_ALL

IS_FILE

public static final DirectoryStream.Filter<Path> IS_FILE

IS_DIR

public static final DirectoryStream.Filter<Path> IS_DIR

Method Details

findNewest

public static File findNewest(String path,
 FilenameFilter ff)

Returns the newest file in a directory.

Parameters:

path - the directory path

ff - a FilenameFilter to limit files selected

Returns:

the File, or null if empty

fileFilter

public static FilenameFilter fileFilter(String prefix,
 String ext)

Utility method to get filenames with a particular prefix and extension.

Parameters:

prefix - the prefix

ext - the extension

Returns:

a FilenameFilter

setOwner

public static void setOwner(File f,
 String owner,
 String group)
                     throws IOException

Sets the owner and group membership for a file.

Parameters:

f - the File

owner - the owner name

group - the group name

Throws:

IOException - if an error occurs

setPermissions

public static void setPermissions(File f,
 String... permissions)
                           throws IOException

Sets the permissions for a file.

Parameters:

f - the File

permissions - the permission names

Throws:

IOException - if an error occurs

See Also:

• PosixFilePermission