Package org.apache.commons.io

This package defines utility classes for working with streams, readers, writers and files.

See:
Description

Class Summary

ByteOrderMark	Byte Order Mark (BOM) representation - see BOMInputStream.
CopyUtils	Deprecated. Use IOUtils.
DirectoryWalker<T>	Abstract class that walks through a directory hierarchy and provides subclasses with convenient hooks to add specific behaviour.
EndianUtils	Utility code for dealing with different endian systems.
FileCleaner	Deprecated. Use FileCleaningTracker
FileCleaningTracker	Keeps track of files awaiting deletion, and deletes them when an associated marker object is reclaimed by the garbage collector.
FileDeleteStrategy	Strategy for deleting files.
FilenameUtils	General filename and filepath manipulation utilities.
FileSystemUtils	General File System utilities.
FileUtils	General file manipulation utilities.
HexDump	Dumps data in hexadecimal format.
IOCase	Enumeration of IO case sensitivity.
IOUtils	General IO stream manipulation utilities.
LineIterator	An Iterator over the lines in a Reader.

Exception Summary

DirectoryWalker.CancelException	CancelException is thrown in DirectoryWalker to cancel the current processing.
FileExistsException	Indicates that a file already exists.
IOExceptionWithCause	Subclasses IOException with the Throwable constructors missing before Java 6.
TaggedIOException	An IOException decorator that adds a serializable tag to the wrapped exception.

Package org.apache.commons.io Description

This package defines utility classes for working with streams, readers, writers and files. The most commonly used classes are described here:

IOUtils is the most frequently used class. It provides operations to read, write, copy and close streams.

FileUtils provides operations based around the JDK File class. These include reading, writing, copying, comparing and deleting.

FilenameUtils provides utilities based on filenames. This utility class manipulates filenames without using File objects. It aims to simplify the transition between Windows and Unix. Before using this class however, you should consider whether you should be using File objects.

FileSystemUtils allows access to the filing system in ways the JDK does not support. At present this allows you to get the free space on a drive.

EndianUtils swaps data between Big-Endian and Little-Endian formats.