 Known Direct Subclasses
| Base64OutputStream |
An OutputStream that does Base64 encoding on the data written to
it, writing the resulting data to another OutputStream. |
| BufferedOutputStream |
Wraps an existing OutputStream and buffers the output. |
| CheckedOutputStream |
The CheckedOutputStream class is used to maintain a running checksum
of all data written to a stream. |
| CipherOutputStream |
This class wraps an output stream and a cipher so that write methods
send the data through the cipher before writing them to the underlying output
stream. |
| DataOutputStream |
Wraps an existing OutputStream and writes big-endian typed data to it. |
| DeflaterOutputStream |
This class provides an implementation of FilterOutputStream that
compresses data using the DEFLATE algorithm. |
| DigestOutputStream |
DigestOutputStream is a FilterOutputStream which maintains an
associated message digest. |
| InflaterOutputStream |
An OutputStream filter to decompress data. |
| PrintStream |
Wraps an existing OutputStream and provides convenience methods for
writing common data types in a human readable format. |
|
Known Indirect Subclasses
| GZIPOutputStream |
The GZIPOutputStream class is used to write data to a stream in the
GZIP storage format. |
| JarOutputStream |
The JarOutputStream is used to write data in the JarFile
format to an arbitrary output stream
|
| ZipOutputStream |
Used to write (compress) data into zip files. |
|
Class Overview
Wraps an existing OutputStream and performs some transformation on
the output data while it is being written. Transformations can be anything
from a simple byte-wise filtering output data to an on-the-fly compression or
decompression of the underlying stream. Output streams that wrap another
output stream and provide some additional functionality on top of it usually
inherit from this class.
Summary
| Fields |
|---|
|
protected
OutputStream |
out |
The target output stream for this filter stream. |
| Public Methods |
|---|
|
void
|
close()
Closes this stream.
|
|
void
|
flush()
Ensures that all pending data is sent out to the target stream.
|
|
void
|
write(byte[] buffer, int offset, int length)
Writes count bytes from the byte array buffer starting at
offset to the target stream.
|
|
void
|
write(int oneByte)
Writes one byte to the target stream.
|
|
[Expand]
Inherited Methods |
|---|
From class
java.io.OutputStream
|
void
|
close()
Closes this stream.
|
|
void
|
flush()
Flushes this stream.
|
|
void
|
write(byte[] buffer, int offset, int count)
Writes count bytes from the byte array buffer starting at
position offset to this stream.
|
|
void
|
write(byte[] buffer)
Equivalent to write(buffer, 0, buffer.length).
|
|
abstract
void
|
write(int oneByte)
Writes a single byte to this stream.
|
|
From class
java.lang.Object
|
Object
|
clone()
Creates and returns a copy of this Object.
|
|
boolean
|
equals(Object o)
Compares this instance with the specified object and indicates if they
are equal.
|
|
void
|
finalize()
Invoked when the garbage collector has detected that this instance is no longer reachable.
|
|
final
Class<?>
|
getClass()
Returns the unique instance of Class that represents this
object's class. |
|
int
|
hashCode()
Returns an integer hash code for this object.
|
|
final
void
|
notify()
Causes a thread which is waiting on this object's monitor (by means of
calling one of the wait() methods) to be woken up.
|
|
final
void
|
notifyAll()
Causes all threads which are waiting on this object's monitor (by means
of calling one of the wait() methods) to be woken up.
|
|
String
|
toString()
Returns a string containing a concise, human-readable description of this
object.
|
|
final
void
|
wait()
Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object.
|
|
final
void
|
wait(long millis, int nanos)
Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object or until the
specified timeout expires.
|
|
final
void
|
wait(long millis)
Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object or until the
specified timeout expires.
|
|
From interface
java.io.Closeable
|
abstract
void
|
close()
Closes the object and release any system resources it holds.
|
|
From interface
java.io.Flushable
|
abstract
void
|
flush()
Flushes the object by writing out any buffered data to the underlying
output.
|
|
From interface
java.lang.AutoCloseable
|
abstract
void
|
close()
Closes the object and release any system resources it holds.
|
|
Fields
The target output stream for this filter stream.
Public Constructors
public
FilterOutputStream
(OutputStream out)
Constructs a new FilterOutputStream with out as its
target stream.
Parameters
| out
| the target stream that this stream writes to.
|
Public Methods
public
void
close
()
Closes this stream. This implementation closes the target stream.
Throws
| IOException
| if an error occurs attempting to close this stream.
|
public
void
flush
()
Ensures that all pending data is sent out to the target stream. This
implementation flushes the target stream.
Throws
| IOException
| if an error occurs attempting to flush this stream.
|
public
void
write
(byte[] buffer, int offset, int length)
Writes count bytes from the byte array buffer starting at
offset to the target stream.
Parameters
| buffer
| the buffer to write. |
| offset
| the index of the first byte in buffer to write. |
| length
| the number of bytes in buffer to write. |
public
void
write
(int oneByte)
Writes one byte to the target stream. Only the low order byte of the
integer oneByte is written.
Parameters
| oneByte
| the byte to be written. |
Throws
| IOException
| if an I/O error occurs while writing to this stream.
|
