BufferedOutputStream
public
class
BufferedOutputStream
extends FilterOutputStream
The class implements a buffered output stream. By setting up such
an output stream, an application can write bytes to the underlying
output stream without necessarily causing a call to the underlying
system for each byte written.
Summary
Fields |
protected
byte[] |
buf
The internal buffer where data is stored.
|
protected
int |
count
The number of valid bytes in the buffer.
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Public constructors |
BufferedOutputStream(OutputStream out)
Creates a new buffered output stream to write data to the
specified underlying output stream.
|
BufferedOutputStream(OutputStream out, int size)
Creates a new buffered output stream to write data to the
specified underlying output stream with the specified buffer
size.
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Public methods |
void
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flush()
Flushes this buffered output stream.
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void
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write(byte[] b, int off, int len)
Writes len bytes from the specified byte array
starting at offset off to this buffered output stream.
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void
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write(int b)
Writes the specified byte to this buffered output stream.
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Inherited methods |
From class
java.io.FilterOutputStream
void
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close()
Closes this output stream and releases any system resources
associated with the stream.
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void
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flush()
Flushes this output stream and forces any buffered output bytes
to be written out to the stream.
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void
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write(byte[] b)
Writes b.length bytes to this output stream.
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void
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write(byte[] b, int off, int len)
Writes len bytes from the specified
byte array starting at offset off to
this output stream.
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void
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write(int b)
Writes the specified byte to this output stream.
|
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From class
java.io.OutputStream
void
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close()
Closes this output stream and releases any system resources
associated with this stream.
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void
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flush()
Flushes this output stream and forces any buffered output bytes
to be written out.
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static
OutputStream
|
nullOutputStream()
Returns a new OutputStream which discards all bytes.
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void
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write(byte[] b)
Writes b.length bytes from the specified byte array
to this output stream.
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void
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write(byte[] b, int off, int len)
Writes len bytes from the specified byte array
starting at offset off to this output stream.
|
abstract
void
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write(int b)
Writes the specified byte to this output stream.
|
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From class
java.lang.Object
Object
|
clone()
Creates and returns a copy of this object.
|
boolean
|
equals(Object obj)
Indicates whether some other object is "equal to" this one.
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void
|
finalize()
Called by the garbage collector on an object when garbage collection
determines that there are no more references to the object.
|
final
Class<?>
|
getClass()
Returns the runtime class of this Object .
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int
|
hashCode()
Returns a hash code value for the object.
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final
void
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notify()
Wakes up a single thread that is waiting on this object's
monitor.
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final
void
|
notifyAll()
Wakes up all threads that are waiting on this object's monitor.
|
String
|
toString()
Returns a string representation of the object.
|
final
void
|
wait(long timeoutMillis, int nanos)
Causes the current thread to wait until it is awakened, typically
by being notified or interrupted, or until a
certain amount of real time has elapsed.
|
final
void
|
wait(long timeoutMillis)
Causes the current thread to wait until it is awakened, typically
by being notified or interrupted, or until a
certain amount of real time has elapsed.
|
final
void
|
wait()
Causes the current thread to wait until it is awakened, typically
by being notified or interrupted.
|
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From interface
java.io.Closeable
abstract
void
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close()
Closes this stream and releases any system resources associated
with it.
|
|
From interface
java.io.Flushable
abstract
void
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flush()
Flushes this stream by writing any buffered output to the underlying
stream.
|
|
From interface
java.lang.AutoCloseable
abstract
void
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close()
Closes this resource, relinquishing any underlying resources.
|
|
Fields
buf
protected byte[] buf
The internal buffer where data is stored.
count
protected int count
The number of valid bytes in the buffer. This value is always
in the range 0
through buf.length
; elements
buf[0]
through buf[count-1]
contain valid
byte data.
Public constructors
BufferedOutputStream
public BufferedOutputStream (OutputStream out)
Creates a new buffered output stream to write data to the
specified underlying output stream.
Parameters |
out |
OutputStream : the underlying output stream. |
BufferedOutputStream
public BufferedOutputStream (OutputStream out,
int size)
Creates a new buffered output stream to write data to the
specified underlying output stream with the specified buffer
size.
Parameters |
out |
OutputStream : the underlying output stream. |
size |
int : the buffer size. |
Public methods
flush
public void flush ()
Flushes this buffered output stream. This forces any buffered
output bytes to be written out to the underlying output stream.
write
public void write (byte[] b,
int off,
int len)
Writes len
bytes from the specified byte array
starting at offset off
to this buffered output stream.
Ordinarily this method stores bytes from the given array into this
stream's buffer, flushing the buffer to the underlying output stream as
needed. If the requested length is at least as large as this stream's
buffer, however, then this method will flush the buffer and write the
bytes directly to the underlying output stream. Thus redundant
BufferedOutputStream
s will not copy data unnecessarily.
Parameters |
b |
byte : the data. |
off |
int : the start offset in the data. |
len |
int : the number of bytes to write. |
write
public void write (int b)
Writes the specified byte to this buffered output stream.
Parameters |
b |
int : the byte to be written. |