/* * Copyright (c) 2000 jPOS.org. All rights reserved. *  * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: *  1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. *  2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. *  3. The end-user documentation included with the redistribution, if any, * must include the following acknowledgment: "This product includes software * developed by the jPOS project (http://www.jpos.org/)". Alternately, this * acknowledgment may appear in the software itself, if and wherever such * third-party acknowledgments normally appear. *  4. The names "jPOS" and "jPOS.org" must not be used to endorse or promote * products derived from this software without prior written permission. For * written permission, please contact license@jpos.org. *  5. Products derived from this software may not be called "jPOS", nor may * "jPOS" appear in their name, without prior written permission of the jPOS * project. *  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE JPOS * PROJECT OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * ==================================================================== *  * This software consists of voluntary contributions made by many individuals * on behalf of the jPOS Project. For more information please see * <http://www.jpos.org/> . */package org.jpos.iso;import org.jpos.iso.ISOException;/** * An interface for padding and unpadding strings and byte arrays. *  * @author joconnor * @version $Revision: 1.2 $ $Date: 2003/11/05 09:00:22 $ */public interface Padder{    /**	 * Returns a padded string upto a maximum length. If the data is longer	 * than maxLength, then the data is truncated.	 * 	 * @param data	 *            The string to pad.	 * @param maxLength	 *            The maximum length of the padded string.	 * @return A padded string.	 */    String pad(String data, int maxLength) throws ISOException;    /**	 * Removes the padding from a padded string.	 * 	 * @param paddedData	 *            The string to unpad.	 * @return The unpadded string.	 */    String unpad(String paddedData) throws ISOException;}