Java™ Platform
Standard Ed. 6

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

void update(int b)
Updates the current checksum with the specified byte.

Parameters:
b - the byte to update the checksum with

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

getValue

long getValue()
Returns the current checksum value.

Returns:
the current checksum value

reset

void reset()
Resets the checksum to its initial value.


Java™ Platform
Standard Ed. 6

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

Copyright 2008 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.


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