org.eclipse.net4j.util.io
Class DigestWriter

java.lang.Object
  java.io.Writer
      java.io.FilterWriter
          org.eclipse.net4j.util.io.DigestWriter

All Implemented Interfaces:

Closeable, Flushable, Appendable

public class DigestWriter

extends FilterWriter

Since:

3.1

digest

protected MessageDigest digest

The message digest associated with this stream.

DigestWriter

public DigestWriter(Writer writer,
                    MessageDigest digest)

Creates a digest writer, using the specified writer and message digest.

Parameters:

writer - the writer.

digest - the message digest to associate with this writer.

getMessageDigest

public MessageDigest getMessageDigest()

Returns the message digest associated with this writer.

Returns:

the message digest associated with this writer.

See Also:

setMessageDigest(java.security.MessageDigest)

setMessageDigest

public void setMessageDigest(MessageDigest digest)

Associates the specified message digest with this writer.

Parameters:

digest - the message digest to be associated with this writer.

See Also:

getMessageDigest()

write

public void write(int c)
           throws IOException

Overrides:

write in class FilterWriter

Throws:

IOException

write

public void write(char[] cbuf,
                  int off,
                  int len)
           throws IOException

Overrides:

write in class FilterWriter

Throws:

IOException

write

public void write(String str,
                  int off,
                  int len)
           throws IOException

Overrides:

write in class FilterWriter

Throws:

IOException

on

public void on(boolean on)

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.

toString

public String toString()

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

Overrides:

toString in class Object