java.util.zip
Interface Checksum

All Known Implementing Classes:

Adler32, CRC32

public interface Checksum

An interface representing a data checksum.

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

public void update(int b)

Updates the current checksum with the specified byte.

Parameters:

b - the byte to update the checksum with

update

public 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

getValue

public long getValue()

Returns the current checksum value.

Returns:

the current checksum value

reset

public void reset()

Resets the checksum to its initial value.