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Java(TM) 2 Platform, Standard Edition, v1.2.2 API Specification: Class Adler32 - JDK 5 Documentation v1.2.2, Java 2 SDK 英文文档

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java.util.zip
Class Adler32

java.lang.Object
  |
  +--java.util.zip.Adler32

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public class Adler32

extends Object

implements Checksum

A class that can be used to compute the Adler-32 checksum of a data stream. An Adler-32 checksum is almost as reliable as a CRC-32 but can be computed much faster.

See Also:

Checksum

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Constructor Summary

Adler32()           Creates a new Adler32 class.

 

Method Summary
long	getValue()           Returns checksum value.
void	reset()           Resets checksum to initial value.
void	update(byte[] b)           Updates checksum with specified array of bytes.
void	update(byte[] b, int off, int len)           Updates checksum with specified array of bytes.
void	update(int b)           Updates checksum with specified byte.

 

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 Adler32 class.

Method Detail

update

public void update(int b)

Updates checksum with specified byte.

Specified by:

update in interface Checksum

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update

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

Updates checksum with specified array of bytes.

Specified by:

update in interface Checksum

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update

public void update(byte[] b)

Updates checksum with specified array of bytes.

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reset

public void reset()

Resets checksum to initial value.

Specified by:

reset in interface Checksum

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getValue

public long getValue()

Returns checksum value.

Specified by:

getValue in interface Checksum

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