java.util.zip
Class Adler32

java.lang.Object
  java.util.zip.Adler32

All Implemented Interfaces:

Checksum

public class Adler32
extends Object
implements Checksum

The Adler32 class is used to compute the Adler32 Checksum from a set of data.

Constructor Summary

Adler32()

Method Summary

long	getValue() Returns the Adler32 checksum for all input received
void	reset() Reset this instance to its initial checksum
void	update(byte[] buf) Update this Adler32 checksum using the contents of buf.
void	update(byte[] buf, int off, int nbytes) Update this Adler32 checksum with the contents of buf, starting from offset and using nbytes of data.
void	update(int i) Update this Adler32 checksum using val.

Methods inherited from class java.lang.Object

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

Constructor Detail

Adler32

public Adler32()

Method Detail

getValue

public long getValue()

Returns the Adler32 checksum for all input received

Specified by:

getValue in interface Checksum

Returns:

The checksum for this instance

reset

public void reset()

Reset this instance to its initial checksum

Specified by:

reset in interface Checksum

update

public void update(int i)

Update this Adler32 checksum using val.

Specified by:

update in interface Checksum

Parameters:

i - byte to update checksum with

update

public void update(byte[] buf)

Update this Adler32 checksum using the contents of buf.

Parameters:

buf - bytes to update checksum with

update

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

Update this Adler32 checksum with the contents of buf, starting from offset and using nbytes of data.

Specified by:

update in interface Checksum

Parameters:

buf - buffer to obtain dat from

off - offset i buf to copy from

nbytes - number of bytes from buf to use