public class FileUtils extends Object
Facilities are provided in the following areas:
Note that a specific charset should be specified whenever possible. Relying on the platform default means that the code is Locale-dependent. Only use the default if the files are known to always use the platform default.
Origin of code: Excalibur, Alexandria, Commons-Utils
| Constructor and Description | 
|---|
| FileUtils()Instances should NOT be constructed in standard programming. | 
| Modifier and Type | Method and Description | 
|---|---|
| static void | cleanDirectory(File directory)Cleans a directory without deleting it. | 
| static void | deleteDirectory(File directory)Deletes a directory recursively. | 
| static void | forceDelete(File file)Deletes a file. | 
| static void | forceDeleteOnExit(File file)Schedules a file to be deleted when JVM exits. | 
| static void | forceMkdir(File directory)Makes a directory, including any necessary but nonexistent parent
 directories. | 
| static void | forceMkdirParent(File file)Makes any necessary but nonexistent parent directories for a given File. | 
| static boolean | isSymlink(File file)Determines whether the specified file is a Symbolic Link rather than an actual file. | 
public FileUtils()
public static void deleteDirectory(File directory) throws IOException
directory - directory to deleteIOException - in case deletion is unsuccessfulIllegalArgumentException - if directory does not exist or is not a directorypublic static void cleanDirectory(File directory) throws IOException
directory - directory to cleanIOException - in case cleaning is unsuccessfulIllegalArgumentException - if directory does not exist or is not a directorypublic static void forceDelete(File file) throws IOException
The difference between File.delete() and this method are:
file - file or directory to delete, must not be nullNullPointerException - if the directory is nullFileNotFoundException - if the file was not foundIOException - in case deletion is unsuccessfulpublic static void forceDeleteOnExit(File file) throws IOException
file - file or directory to delete, must not be nullNullPointerException - if the file is nullIOException - in case deletion is unsuccessfulpublic static void forceMkdir(File directory) throws IOException
directory - directory to create, must not be nullNullPointerException - if the directory is nullIOException - if the directory cannot be created or the file already exists but is not a directorypublic static void forceMkdirParent(File file) throws IOException
file - file with parent to create, must not be nullNullPointerException - if the file is nullIOException - if the parent directory cannot be createdpublic static boolean isSymlink(File file) throws IOException
Will not return true if there is a Symbolic Link anywhere in the path, only if the specific file is.
 Note: the current implementation always returns false if
 the system is detected as Windows using
 File.separatorChar == '\\'
file - the file to checkIOException - if an IO error occurs while checking the fileCopyright © 2000-2020 Apache Software Foundation. All Rights Reserved.