/* * Copyright (c) 1996, 1999, Oracle and/or its affiliates. All rights reserved. * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. * * * * * * * * * * * * * * * * * * * * */ 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(); }