Package org.apache.commons.io
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.
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Class Summary Class Description ByteOrderMark Byte Order Mark (BOM) representation - seeBOMInputStream
.Charsets Charsets required of every implementation of the Java platform.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. FileCleaningTracker Keeps track of files awaiting deletion, and deletes them when an associated marker object is reclaimed by the garbage collector.FileCleaningTracker.Tracker Inner class which acts as the reference for a file pending deletion.FileDeleteStrategy Strategy for deleting files.FileDeleteStrategy.ForceFileDeleteStrategy Force file deletion strategy.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 aReader
.ThreadMonitor Monitors a thread, interrupting it of it reaches the specified timout. -
Exception Summary Exception Description DirectoryWalker.CancelException CancelException is thrown in DirectoryWalker to cancel the current processing.FileExistsException Indicates that a file already exists.IOExceptionWithCause Subclasses IOException with theThrowable
constructors missing before Java 6.TaggedIOException AnIOException
decorator that adds a serializable tag to the wrapped exception.