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Java(TM) 2 Platform, Standard Edition, v1.2.2 API Specification: Class CRC32 - JDK 5 Documentation v1.2.2, Java 2 SDK 英文文档

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java.util.zip
Class CRC32

java.lang.Object
  |
  +--java.util.zip.CRC32

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public class CRC32

extends Object

implements Checksum

A class that can be used to compute the CRC-32 of a data stream.

See Also:

Checksum

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Constructor Summary

CRC32()           Creates a new CRC32 class.

 

Method Summary
long	getValue()           Returns CRC-32 value.
void	reset()           Resets CRC-32 to initial value.
void	update(byte[] b)           Updates checksum with specified array of bytes.
void	update(byte[] b, int off, int len)           Updates CRC-32 with specified array of bytes.
void	update(int b)           Updates CRC-32 with specified byte.

 

Methods inherited from class java.lang.Object

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

 

Constructor Detail

CRC32

public CRC32()

Creates a new CRC32 class.

Method Detail

update

public void update(int b)

Updates CRC-32 with specified byte.

Specified by:

update in interface Checksum

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update

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

Updates CRC-32 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 CRC-32 to initial value.

Specified by:

reset in interface Checksum

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getValue

public long getValue()

Returns CRC-32 value.

Specified by:

getValue in interface Checksum

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