public
class
BufferedOutputStream
extends FilterOutputStream
| java.lang.Object | |||
| ↳ | java.io.OutputStream | ||
| ↳ | java.io.FilterOutputStream | ||
| ↳ | java.io.BufferedOutputStream | ||
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.
Fields | |
|---|---|
protected
byte[] |
buf
The internal buffer where data is stored. |
protected
int |
count
The number of valid bytes in the buffer. |
Inherited fields |
|---|
 From
class
java.io.FilterOutputStream
|
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. |
|
Public methods | |
|---|---|
void
|
flush()
Flushes this buffered output stream. |
void
|
write(byte[] b, int off, int len)
Writes |
void
|
write(int b)
Writes the specified byte to this buffered output stream. |
Inherited methods | |
|---|---|
From
class
java.io.FilterOutputStream
| |
From
class
java.io.OutputStream
| |
From
class
java.lang.Object
| |
From
interface
java.io.Closeable
| |
From
interface
java.io.Flushable
| |
From
interface
java.lang.AutoCloseable
| |
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.
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 (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. |
| Throws | |
|---|---|
IllegalArgumentException |
if size <= 0. |
void flush ()
Flushes this buffered output stream. This forces any buffered output bytes to be written out to the underlying output stream.
| Throws | |
|---|---|
IOException |
if an I/O error occurs. |
See also:
Developers
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
BufferedOutputStreams 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. |
| Throws | |
|---|---|
IOException |
if an I/O error occurs. |
void write (int b)
Writes the specified byte to this buffered output stream.
| Parameters | |
|---|---|
b |
int:
the byte to be written. |
| Throws | |
|---|---|
IOException |
if an I/O error occurs. |