public class FilterOutputStream extends OutputStream
The class FilterOutputStream itself simply overrides
all methods of OutputStream with versions that pass
all requests to the underlying output stream. Subclasses of
FilterOutputStream may further override some of these
methods as well as provide additional methods and fields.
| Modifier and Type | Field and Description |
|---|---|
protected OutputStream |
out
The underlying output stream to be filtered.
|
| Constructor and Description |
|---|
FilterOutputStream(OutputStream out)
Creates an output stream filter built on top of the specified
underlying output stream.
|
| Modifier and Type | Method and Description |
|---|---|
void |
close()
Closes this output stream and releases any system resources
associated with the stream.
|
void |
flush()
Flushes this output stream and forces any buffered output bytes
to be written out to the stream.
|
void |
write(byte[] b)
Writes
b.length bytes to this output stream. |
void |
write(byte[] b,
int off,
int len)
Writes
len bytes from the specified
byte array starting at offset off to
this output stream. |
void |
write(int b)
Writes the specified
byte to this output stream. |
protected OutputStream out
public FilterOutputStream(OutputStream out)
out - the underlying output stream to be assigned to
the field this.out for later use, or
null if this instance is to be
created without an underlying stream.public void write(int b)
throws IOException
byte to this output stream.
The write method of FilterOutputStream
calls the write method of its underlying output stream,
that is, it performs out.write(b).
Implements the abstract write method of OutputStream.
write in class OutputStreamb - the byte.IOException - if an I/O error occurs.public void write(byte[] b)
throws IOException
b.length bytes to this output stream.
The write method of FilterOutputStream
calls its write method of three arguments with the
arguments b, 0, and
b.length.
Note that this method does not call the one-argument
write method of its underlying stream with the single
argument b.
write in class OutputStreamb - the data to be written.IOException - if an I/O error occurs.write(byte[], int, int)public void write(byte[] b,
int off,
int len)
throws IOException
len bytes from the specified
byte array starting at offset off to
this output stream.
The write method of FilterOutputStream
calls the write method of one argument on each
byte to output.
Note that this method does not call the write method
of its underlying input stream with the same arguments. Subclasses
of FilterOutputStream should provide a more efficient
implementation of this method.
write in class OutputStreamb - the data.off - the start offset in the data.len - the number of bytes to write.IOException - if an I/O error occurs.write(int)public void flush()
throws IOException
The flush method of FilterOutputStream
calls the flush method of its underlying output stream.
flush in interface Flushableflush in class OutputStreamIOException - if an I/O error occurs.outpublic void close()
throws IOException
The close method of FilterOutputStream
calls its flush method, and then calls the
close method of its underlying output stream.
close in interface Closeableclose in interface AutoCloseableclose in class OutputStreamIOException - if an I/O error occurs.flush(),
out Submit a bug or feature
For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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