public class OutputStreamCounter extends OutputStream
Modifier and Type | Field and Description |
---|---|
protected long |
counter |
protected OutputStream |
out |
Constructor and Description |
---|
OutputStreamCounter(OutputStream out)
Creates a new instance of OutputStreamCounter
|
Modifier and Type | Method and Description |
---|---|
void |
close()
Closes this output stream and releases any system resources associated with this stream.
|
void |
flush()
Flushes this output stream and forces any buffered output bytes to be written out.
|
long |
getCounter() |
void |
resetCounter() |
void |
write(byte[] b)
Writes b.length bytes from the specified byte array 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
protected long counter
public OutputStreamCounter(OutputStream out)
public void close() throws IOException
close
is that it closes the output stream. A closed stream cannot perform output operations and cannot be reopened.
The close
method of OutputStream
does nothing.
close
in interface Closeable
close
in interface AutoCloseable
close
in class OutputStream
IOException
- if an I/O error occurs.
public void flush() throws IOException
flush
is that calling it is an indication that, if any bytes previously written have been buffered by the implementation of the output stream, such bytes should immediately be written to their intended destination.
The flush
method of OutputStream
does nothing.
flush
in interface Flushable
flush
in class OutputStream
IOException
- if an I/O error occurs.
public void write(byte[] b) throws IOException
b.length
bytes from the specified byte array to this output stream. The general contract for write(b)
is that it should have exactly the same effect as the call write(b, 0, b.length)
.
write
in class OutputStream
b
- the data.
IOException
- if an I/O error occurs.
OutputStream.write(byte[], int, int)
public void write(int b) throws IOException
write
is that one byte is written to the output stream. The byte to be written is the eight low-order bits of the argument b
. The 24 high-order bits of b
are ignored.
Subclasses of OutputStream
must provide an implementation for this method.
write
in class OutputStream
b
- the byte
.
IOException
- if an I/O error occurs. In particular, an IOException
may be thrown if the output stream has been closed.
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 general contract for write(b, off, len)
is that some of the bytes in the array b
are written to the output stream in order; element b[off]
is the first byte written and b[off+len-1]
is the last byte written by this operation.
The write
method of OutputStream
calls the write method of one argument on each of the bytes to be written out. Subclasses are encouraged to override this method and provide a more efficient implementation.
If b
is null
, a NullPointerException
is thrown.
If off
is negative, or len
is negative, or off+len
is greater than the length of the array b
, then an IndexOutOfBoundsException is thrown.
write
in class OutputStream
b
- the data.
off
- the start offset in the data.
len
- the number of bytes to write.
IOException
- if an I/O error occurs. In particular, an IOException
is thrown if the output stream is closed.
public long getCounter()
public void resetCounter()
Copyright © 2016. All rights reserved.