Flushable

AI-generated Key Takeaways

The Flushable interface is for destinations that need to flush buffered output to the underlying stream.
It has a single method flush() which forces any buffered data to be written out.
Classes like BufferedOutputStream, BufferedWriter, and many others implement this interface for efficient output handling.
flush() can throw an IOException if an error occurs during the write operation.

public interface Flushable

Known Indirect Subclasses

BufferedOutputStream, BufferedWriter, ByteArrayOutputStream, CharArrayWriter, CheckedOutputStream, CipherOutputStream, Console, DataOutputStream, DeflaterOutputStream, DigestOutputStream, FileOutputStream, FileWriter, FilterOutputStream, FilterWriter, Formatter, and 13 others.

BufferedOutputStream	The class implements a buffered output stream.
BufferedWriter	Writes text to a character-output stream, buffering characters so as to provide for the efficient writing of single characters, arrays, and strings.
ByteArrayOutputStream	This class implements an output stream in which the data is written into a byte array.
CharArrayWriter	This class implements a character buffer that can be used as an Writer.
CheckedOutputStream	An output stream that also maintains a checksum of the data being written.
CipherOutputStream	A CipherOutputStream is composed of an OutputStream and a Cipher so that write() methods first process the data before writing them out to the underlying OutputStream.
Console	Provides access to the console, if available.
DataOutputStream	A data output stream lets an application write primitive Java data types to an output stream in a portable way.
DeflaterOutputStream	This class implements an output stream filter for compressing data in the "deflate" compression format.
DigestOutputStream	A transparent stream that updates the associated message digest using the bits going through the stream.
FileOutputStream	A file output stream is an output stream for writing data to a `File` or to a `FileDescriptor`.
FileWriter	Convenience class for writing character files.
FilterOutputStream	This class is the superclass of all classes that filter output streams.
FilterWriter	Abstract class for writing filtered character streams.
Formatter	An interpreter for printf-style format strings.
GZIPOutputStream	This class implements a stream filter for writing compressed data in the GZIP file format.
InflaterOutputStream	Implements an output stream filter for uncompressing data stored in the "deflate" compression format.
JarOutputStream	The `JarOutputStream` class is used to write the contents of a JAR file to any output stream.
ObjectOutputStream	An ObjectOutputStream writes primitive data types and graphs of Java objects to an OutputStream.
OutputStream	This abstract class is the superclass of all classes representing an output stream of bytes.
OutputStreamWriter	A class for turning a character stream into a byte stream.
PipedOutputStream	Places information on a communications pipe.
PipedWriter	Piped character-output streams.
PrintStream	A `PrintStream` adds functionality to another output stream, namely the ability to print representations of various data values conveniently.
PrintWriter	Prints formatted representations of objects to a text-output stream.
StringWriter	A character stream that collects its output in a string buffer, which can then be used to construct a string.
Writer	Abstract class for writing to character streams.
ZipOutputStream	This class implements an output stream filter for writing files in the ZIP file format.

A Flushable is a destination of data that can be flushed. The flush method is invoked to write any buffered output to the underlying stream.

Public Method Summary

abstract void

flush()

Flushes this stream by writing any buffered output to the underlying stream.

Public Methods

public abstract void flush ()