joeq.ClassLib.Common.java.util.zip
Class Adler32

java.lang.Object
  joeq.ClassLib.Common.java.util.zip.Adler32

public class Adler32
extends Object

Adler32

Version:

$Id: Adler32.java,v 1.5 2004/03/09 06:26:29 jwhaley Exp $

Author:

John Whaley

Constructor Summary

Adler32()
Creates a new instance of the Adler32 class.

Method Summary

long	getValue() Returns the Adler32 data checksum computed so far.
void	reset() Resets the Adler32 checksum to the initial value.
void	update(byte[] buffer) Updates the checksum with the bytes taken from the array.
void	update(byte[] buf, int off, int len) Updates the checksum with the bytes taken from the array.
void	update(int bval) Updates the checksum with the byte b.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Adler32

public Adler32()

Creates a new instance of the Adler32 class. The checksum starts off with a value of 1.

Method Detail

reset

public void reset()

Resets the Adler32 checksum to the initial value.

update

public void update(int bval)

Updates the checksum with the byte b.

Parameters:

bval - the data value to add. The high byte of the int is ignored.

update

public void update(byte[] buffer)

Updates the checksum with the bytes taken from the array.

Parameters:

buffer - an array of bytes

update

public void update(byte[] buf,
                   int off,
                   int len)

Updates the checksum with the bytes taken from the array.

Parameters:

buf - an array of bytes

off - the start of the data used for this update

len - the number of bytes to use for this update

getValue

public long getValue()

Returns the Adler32 data checksum computed so far.