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Checksum (Java 2 Platform SE 5.0) - JDK 5 Documentation v1.5.0, Java 2 SDK 英文文档

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java.util.zip
Interface Checksum

All Known Implementing Classes:

Adler32, CRC32

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public interface Checksum

An interface representing a data checksum.

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

 

Method Detail

update

void update(int b)

Updates the current checksum with the specified byte.

Parameters:

b - the byte to update the checksum with

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update

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

Updates the current checksum with the specified array of bytes.

Parameters:

b - the byte array to update the checksum with

off - the start offset of the data

len - the number of bytes to use for the update

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getValue

long getValue()

Returns the current checksum value.

Returns:

the current checksum value

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reset

void reset()

Resets the checksum to its initial value.

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For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

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