DigestOutputStream JDK 1.6)

Methods

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public void close () throws IOException [Inherited From FilterOutputStream]

Closes this output stream and releases any system resources associated with the stream.

public void flush () throws IOException [Inherited From FilterOutputStream]

Flushes this output stream and forces any buffered output bytes to be written out to the stream.

public MessageDigest getMessageDigest ()

Returns the message digest associated with this stream.

public void on (boolean on)

Turns the digest function on or off.

Turns the digest function on or off. The default is on. When
it is on, a call to one of the write methods results in an
update on the message digest. But when it is off, the message
digest is not updated.
Parameters:
- on - true to turn the digest function on, false to turn it off.

public void setMessageDigest (MessageDigest digest)

Associates the specified message digest with this stream.

public String toString ()

Prints a string representation of this digest output stream and its associated message digest object.

public void write (byte[] b) throws IOException [Inherited From FilterOutputStream]

Writes 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.
Parameters:
- b - the data to be written.
Throws:
- IOException - if an I/O error occurs.
See Also: FilterOutputStream.write(byte[], int, int),

public void write (byte[] b, int off, int len) throws IOException [Overrides FilterOutputStream]

Updates the message digest (if the digest function is on) using the specified subarray, and in any case writes the subarray to the output stream.

Updates the message digest (if the digest function is on) using
the specified subarray, and in any case writes the subarray to
the output stream. That is, if the digest function is on (see
on), this method calls update
on the message digest associated with this stream, passing it
the subarray specifications. This method then writes the subarray
bytes to the output stream, blocking until the bytes are actually
written.
Parameters:
- b - the array containing the subarray to be used for updating and writing to the output stream.
- off - the offset into b of the first byte to be updated and written.
- len - the number of bytes of data to be updated and written from b, starting at offset off.
Throws:
- IOException - if an I/O error occurs.
See Also: MessageDigest.update(byte[], int, int),

public void write (int b) throws IOException [Overrides FilterOutputStream] [Specified in OutputStream]

Updates the message digest (if the digest function is on) using the specified byte, and in any case writes the byte to the output stream.

Updates the message digest (if the digest function is on) using
the specified byte, and in any case writes the byte
to the output stream. That is, if the digest function is on
(see on), this method calls
update on the message digest associated with this
stream, passing it the byte b. This method then
writes the byte to the output stream, blocking until the byte
is actually written.
Parameters:
- b - the byte to be used for updating and writing to the output stream.
Throws:
- IOException - if an I/O error occurs.
See Also: MessageDigest.update(byte),