/*
* Copyright (c) 1996, 1999, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*
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package java.util.zip;
/**
* An interface representing a data checksum.
*
* @author David Connelly
*/
public
interface Checksum {
/**
* Updates the current checksum with the specified byte.
*
* @param b the byte to update the checksum with
*/
public void update(int b);
/**
* Updates the current checksum with the specified array of bytes.
* @param b the byte array to update the checksum with
* @param off the start offset of the data
* @param len the number of bytes to use for the update
*/
public void update(byte[] b, int off, int len);
/**
* Returns the current checksum value.
* @return the current checksum value
*/
public long getValue();
/**
* Resets the checksum to its initial value.
*/
public void reset();
}