All Classes and Interfaces

Class	Description
AbstractByteArrayOutputStream	This is the base class for implementing an output stream in which the data is written into a byte array.
AbstractByteArrayOutputStream.InputStreamConstructor<T extends InputStream>	Constructor for an InputStream subclass.
AbstractCharacterFilterReader	A filter reader that filters out characters where subclasses decide which characters to filter out.
AbstractFileFilter	Abstracts the implementation of the FileFilter (IO), FilenameFilter (IO), PathFilter (NIO) interfaces via our own IOFileFilter interface.
AccumulatorPathVisitor	Accumulates normalized paths during visitation.
AgeFileFilter	Filters files based on a cutoff time, can filter either newer files or files equal to or older.
AndFileFilter	A FileFilter providing conditional AND logic across a list of file filters.
AppendableOutputStream<T extends Appendable>	OutputStream implementation that writes the data to an Appendable Object.
AppendableWriter<T extends Appendable>	Writer implementation that writes the data to an Appendable Object.
AutoCloseInputStream	Proxy stream that closes and discards the underlying stream as soon as the end of input has been reached or when the stream is explicitly closed.
BOMInputStream	This class is used to wrap a stream that includes an encoded ByteOrderMark as its first bytes.
BoundedInputStream	This is a stream that will only supply bytes up to a certain length - if its position goes above that, it will stop.
BoundedReader	A reader that imposes a limit to the number of characters that can be read from an underlying reader, returning EOF when this limit is reached, regardless of state of underlying reader.
BrokenInputStream	Broken input stream.
BrokenOutputStream	Broken output stream.
BrokenReader	Broken reader.
BrokenWriter	Broken writer.
BufferedFileChannelInputStream	InputStream implementation which uses direct buffer to read a file to avoid extra copy of data between Java and native memory which happens when using BufferedInputStream.
ByteArrayOutputStream	Implements a ThreadSafe version of AbstractByteArrayOutputStream using instance synchronization.
ByteOrderMark	Byte Order Mark (BOM) representation - see BOMInputStream.
ByteOrderParser	Converts Strings to ByteOrder instances.
CanExecuteFileFilter	This filter accepts Files that can be executed.
CanReadFileFilter	This filter accepts Files that can be read.
CanWriteFileFilter	This filter accepts Files that can be written to.
CharacterFilterReader	A filter reader that filters out a given character represented as an int code point, handy to remove known junk characters from CSV files for example.
CharacterSetFilterReader	A filter reader that removes a given set of characters represented as int code points, handy to remove known junk characters from CSV files for example.
CharSequenceInputStream	InputStream implementation that can read from String, StringBuffer, StringBuilder or CharBuffer.
CharSequenceReader	Reader implementation that can read from String, StringBuffer, StringBuilder or CharBuffer.
Charsets	Charsets required of every implementation of the Java platform.
ChunkedOutputStream	OutputStream which breaks larger output blocks into chunks.
ChunkedWriter	Writer which breaks larger output blocks into chunks.
CircularBufferInputStream	Implements a buffered input stream, which is internally based on a CircularByteBuffer.
CircularByteBuffer	A buffer, which doesn't need reallocation of byte arrays, because it reuses a single byte array.
CircularInputStream	An InputStream that repeats provided bytes for given target byte count.
ClassLoaderObjectInputStream	A special ObjectInputStream that loads a class based on a specified ClassLoader rather than the system default.
ClassNameMatcher	An object that matches a Class name to a condition.
CleaningPathVisitor	Deletes files but not directories as a visit proceeds.
ClosedInputStream	Closed input stream.
ClosedOutputStream	Throws an exception on all attempts to write to the stream.
ClosedReader	Closed reader.
ClosedWriter	Throws an exception on all attempts to write with ClosedWriter.close() implemented as a noop.
CloseShieldInputStream	Proxy stream that prevents the underlying input stream from being closed.
CloseShieldOutputStream	Proxy stream that prevents the underlying output stream from being closed.
CloseShieldReader	Proxy reader that prevents the underlying reader from being closed.
CloseShieldWriter	Proxy writer that prevents the underlying writer from being closed.
CompositeFileComparator	Compare two files using a set of delegate file Comparator.
ConditionalFileFilter	Defines operations for conditional file filters.
CopyDirectoryVisitor	Copies a source directory to a target directory.
CopyUtils	Deprecated. Use IOUtils.
Counters	Provides counters for files, directories, and sizes, as a visit proceeds.
Counters.Counter	Counts using a number.
Counters.PathCounters	Counts files, directories, and sizes, as a visit proceeds.
CountingInputStream	A decorating input stream that counts the number of bytes that have passed through the stream so far.
CountingOutputStream	A decorating output stream that counts the number of bytes that have passed through the stream so far.
CountingPathVisitor	Counts files, directories, and sizes, as a visit proceeds.
DefaultFileComparator	Compare two files using the default File.compareTo(File) method.
DeferredFileOutputStream	An output stream which will retain data in memory until a specified threshold is reached, and only then commit it to disk.
DelegateFileFilter	This class turns a Java FileFilter or FilenameFilter into an IO FileFilter.
DeleteOption	An object that configures how to delete a file.
DeletingPathVisitor	Deletes files and directories as a visit proceeds.
DemuxInputStream	Data written to this stream is forwarded to a stream that has been associated with this thread.
DemuxOutputStream	Forwards data to a stream that has been associated with this thread.
DirectoryFileComparator	Compare two files using the File.isDirectory() method.
DirectoryFileFilter	This filter accepts Files that are directories.
DirectoryStreamFilter	A DirectoryStream.Filter that delegates to a PathFilter.
DirectoryWalker<T>	Deprecated. Apache Commons IO no longer uses this class.
DirectoryWalker.CancelException	CancelException is thrown in DirectoryWalker to cancel the current processing.
EmptyFileFilter	This filter accepts files or directories that are empty.
EndianUtils	Utility code for dealing with different endian systems.
ExtensionFileComparator	Compare the file name extensions for order (see FilenameUtils.getExtension(String)).
FalseFileFilter	A file filter that always returns false.
FileAlterationListener	A listener that receives events of file system modifications.
FileAlterationListenerAdaptor	Convenience FileAlterationListener implementation that does nothing.
FileAlterationMonitor	A runnable that spawns a monitoring thread triggering any registered FileAlterationObserver at a specified interval.
FileAlterationObserver	FileAlterationObserver represents the state of files below a root directory, checking the file system and notifying listeners of create, change or delete events.
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.
FileEntry	The state of a file or directory, capturing the following File attributes at a point in time.
FileEqualsFileFilter	Accepts only an exact File object match.
FileExistsException	Indicates that a file already exists.
FileFileFilter	This filter accepts Files that are files (not directories).
FileFilterUtils	Useful utilities for working with file filters.
FilenameUtils	General file name and file path manipulation utilities.
FileSystem	Abstracts an OS' file system details, currently supporting the single use case of converting a file name String to a legal file name with FileSystem.toLegalFileName(String, char).
FileSystemProviders	Helps working with FileSystemProvider.
FileSystemUtils	Deprecated. As of 2.6 deprecated without replacement.
FileUtils	General file manipulation utilities.
FileWriterWithEncoding	Writer of files that allows the encoding to be set.
FilterCollectionWriter	Abstract class for writing filtered character streams to a Collection of writers.
HexDump	Dumps data in hexadecimal format.
HiddenFileFilter	This filter accepts Files that are hidden.
InfiniteCircularInputStream	An InputStream that infinitely repeats the provided bytes.
IOCase	Enumeration of IO case sensitivity.
IOConsumer<T>	Like Consumer but throws IOException.
IOExceptionList	A IOException based on a list of Throwable causes.
IOExceptionWithCause	Deprecated. (since 2.5) use IOException instead
IOFileFilter	An interface which brings the FileFilter, FilenameFilter, and PathFilter interfaces together.
IOFunction<T,R>	Like Function but throws IOException.
IOIndexedException	A IOException associated with a source index.
IOSupplier<T>	Like Supplier but throws IOException.
IOUtils	General IO stream manipulation utilities.
LastModifiedFileComparator	Compare the last modified date/time of two files for order (see FileUtils.lastModifiedUnchecked(File)).
LineIterator	An Iterator over the lines in a Reader.
LockableFileWriter	FileWriter that will create and honor lock files to allow simple cross thread file lock handling.
MagicNumberFileFilter	File filter for matching files containing a "magic number".
MarkShieldInputStream	This is an alternative to ByteArrayInputStream which removes the synchronization overhead for non-concurrent access; as such this class is not thread-safe.
MessageDigestCalculatingInputStream	This class is an example for using an ObservableInputStream.
MessageDigestCalculatingInputStream.MessageDigestMaintainingObserver	Maintains the message digest.
NameFileComparator	Compare the names of two files for order (see File.getName()).
NameFileFilter	Filters file names for a certain name.
NoopPathVisitor	A noop path visitor.
NotFileFilter	This filter produces a logical NOT of the filters specified.
NullAppendable	Appends all data to the famous /dev/null.
NullInputStream	A functional, light weight InputStream that emulates a stream of a specified size.
NullOutputStream	Writes all data to the famous /dev/null.
NullPrintStream	Writes all data to the famous /dev/null.
NullReader	A functional, light weight Reader that emulates a reader of a specified size.
NullWriter	Writes all data to the famous /dev/null.
ObservableInputStream	The ObservableInputStream allows, that an InputStream may be consumed by other receivers, apart from the thread, which is reading it.
ObservableInputStream.Observer	Abstracts observer callback for ObservableInputStreams.
OrFileFilter	A FileFilter providing conditional OR logic across a list of file filters.
PathEqualsFileFilter	Accepts only an exact Path object match.
PathFileComparator	Compare the path of two files for order (see File.getPath()).
PathFilter	A filter for Paths.
PathUtils	NIO Path utilities.
PathVisitor	A FileVisitor typed to a Path.
PathVisitorFileFilter	A file filter backed by a path visitor.
PeekableInputStream	Implements a buffered input stream, which allows to peek into the buffers first bytes.
PrefixFileFilter	Filters file names for a certain prefix.
ProxyCollectionWriter	A Proxy stream collection which acts as expected, that is it passes the method calls on to the proxied streams and doesn't change which methods are being called.
ProxyInputStream	A Proxy stream which acts as expected, that is it passes the method calls on to the proxied stream and doesn't change which methods are being called.
ProxyOutputStream	A Proxy stream which acts as expected, that is it passes the method calls on to the proxied stream and doesn't change which methods are being called.
ProxyReader	A Proxy stream which acts as expected, that is it passes the method calls on to the proxied stream and doesn't change which methods are being called.
ProxyWriter	A Proxy stream which acts as expected, that is it passes the method calls on to the proxied stream and doesn't change which methods are being called.
QueueInputStream	Simple alternative to JDK PipedInputStream; queue input stream provides what's written in queue output stream.
QueueOutputStream	Simple alternative to JDK PipedOutputStream; queue input stream provides what's written in queue output stream.
RandomAccessFileInputStream	Streams data from a RandomAccessFile starting at its current position.
ReadAheadInputStream	Implements InputStream to asynchronously read ahead from an underlying input stream when a specified amount of data has been read from the current buffer.
ReaderInputStream	InputStream implementation that reads a character stream from a Reader and transforms it to a byte stream using a specified charset encoding.
RegexFileFilter	Filters files using supplied regular expression(s).
ReversedLinesFileReader	Reads lines in a file reversely (similar to a BufferedReader, but starting at the last line).
SequenceReader	Provides the contents of multiple Readers in sequence.
SimplePathVisitor	A SimpleFileVisitor typed to a Path.
SizeFileComparator	Compare the length/size of two files for order (see File.length() and FileUtils.sizeOfDirectory(File)).
SizeFileFilter	Filters files based on size, can filter either smaller files or files equal to or larger than a given threshold.
StandardDeleteOption	Defines the standard delete options.
StandardLineSeparator	Enumerates standard line separators: StandardLineSeparator.CR, StandardLineSeparator.CRLF, StandardLineSeparator.LF.
StringBuilderWriter	Writer implementation that outputs to a StringBuilder.
SuffixFileFilter	Filters files based on the suffix (what the file name ends with).
SwappedDataInputStream	DataInput for systems relying on little endian data formats.
SymbolicLinkFileFilter	This filter accepts Files that are symbolic links.
TaggedInputStream	An input stream decorator that tags potential exceptions so that the stream that caused the exception can easily be identified.
TaggedIOException	An IOException decorator that adds a serializable tag to the wrapped exception.
TaggedOutputStream	An output stream decorator that tags potential exceptions so that the stream that caused the exception can easily be identified.
TaggedReader	A reader decorator that tags potential exceptions so that the reader that caused the exception can easily be identified.
TaggedWriter	A writer decorator that tags potential exceptions so that the reader that caused the exception can easily be identified.
Tailer	Simple implementation of the unix "tail -f" functionality.
TailerListener	Listener for events from a Tailer.
TailerListenerAdapter	TailerListener Adapter.
TeeInputStream	InputStream proxy that transparently writes a copy of all bytes read from the proxied stream to a given OutputStream.
TeeOutputStream	Classic splitter of OutputStream.
TeeReader	Reader proxy that transparently writes a copy of all characters read from the proxied reader to a given Reader.
TeeWriter	Classic splitter of Writer.
ThresholdingOutputStream	An output stream which triggers an event when a specified number of bytes of data have been written to it.
TimestampedObserver	An observer with timestamps.
TrueFileFilter	A file filter that always returns true.
UnixLineEndingInputStream	A filtering input stream that ensures the content will have UNIX-style line endings, LF.
UnsynchronizedByteArrayInputStream	This is an alternative to ByteArrayInputStream which removes the synchronization overhead for non-concurrent access; as such this class is not thread-safe.
UnsynchronizedByteArrayOutputStream	Implements a version of AbstractByteArrayOutputStream without any concurrent thread safety.
ValidatingObjectInputStream	An ObjectInputStream that's restricted to deserialize a limited set of classes.
WildcardFileFilter	Filters files using the supplied wildcards.
WildcardFilter	Deprecated. Use WildcardFileFilter.
WindowsLineEndingInputStream	A filtering input stream that ensures the content will have Windows line endings, CRLF.
WriterOutputStream	OutputStream implementation that transforms a byte stream to a character stream using a specified charset encoding and writes the resulting stream to a Writer.
XmlStreamReader	Character stream that handles all the necessary Voodoo to figure out the charset encoding of the XML document within the stream.
XmlStreamReaderException	The XmlStreamReaderException is thrown by the XmlStreamReader constructors if the charset encoding can not be determined according to the XML 1.0 specification and RFC 3023.
XmlStreamWriter	Character stream that handles all the necessary Voodoo to figure out the charset encoding of the XML document written to the stream.