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Checksum.java

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/*

* 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();

}