Closeable
, Flushable
, AutoCloseable
public class BufferedOutputStream extends FilterOutputStream
Modifier and Type | Field | Description |
---|---|---|
protected byte[] |
buf |
The internal buffer where data is stored. |
protected int |
count |
The number of valid bytes in the buffer. |
out
Constructor | Description |
---|---|
BufferedOutputStream |
Creates a new buffered output stream to write data to the specified underlying output stream. |
BufferedOutputStream |
Creates a new buffered output stream to write data to the specified underlying output stream with the specified buffer size. |
Modifier and Type | Method | Description |
---|---|---|
void |
flush() |
Flushes this buffered output stream. |
void |
write |
Writes len bytes from the specified byte array starting at offset off to this buffered output stream. |
void |
write |
Writes the specified byte to this buffered output stream. |
close, write
nullOutputStream
protected byte[] buf
protected int count
0
through buf.length
; elements buf[0]
through buf[count-1]
contain valid byte data.public BufferedOutputStream(OutputStream out)
out
- the underlying output stream.public BufferedOutputStream(OutputStream out, int size)
out
- the underlying output stream.size
- the buffer size.IllegalArgumentException
- if size <= 0.public void write(int b) throws IOException
write
in class FilterOutputStream
b
- the byte to be written.IOException
- if an I/O error occurs.public void write(byte[] b, int off, int len) throws IOException
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.
write
in class FilterOutputStream
b
- the data.off
- the start offset in the data.len
- the number of bytes to write.IOException
- if an I/O error occurs.IndexOutOfBoundsException
- If off
is negative, len
is negative, or len
is greater than b.length - off
public void flush() throws IOException
flush
in interface Flushable
flush
in class FilterOutputStream
IOException
- if an I/O error occurs.
© 1993, 2023, Oracle and/or its affiliates. All rights reserved.
Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
Various third party code in OpenJDK is licensed under different licenses (see Debian package).
Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.
https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/io/BufferedOutputStream.html