Java tutorial
/* Copyright (c) 2001-2009, The HSQL Development Group * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * Redistributions of source code must retain the above copyright notice, this * list of conditions and the following disclaimer. * * 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. * * Neither the name of the HSQL Development Group nor the names of its * contributors may be used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS 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 HSQL DEVELOPMENT GROUP, HSQLDB.ORG, * OR 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. */ /** Provides a collection of convenience methods for processing and * creating objects with <code>String</code> value components. * * @author Campbell Boucher-Burnett (boucherb@users dot sourceforge.net) * @author Fred Toussi (fredt@users dot sourceforge.net) * @author Nitin Chauhan * @version 1.9.0 * @since 1.7.0 */ public class Main { /** * If necessary, adds zeros to the beginning of a value so that the total * length matches the given precision, otherwise trims the right digits. * Then if maxSize is smaller than precision, trims the right digits to * maxSize. Negative values are treated as positive */ public static String toZeroPaddedString(long value, int precision, int maxSize) { StringBuffer sb = new StringBuffer(); if (value < 0) { value = -value; } String s = Long.toString(value); if (s.length() > precision) { s = s.substring(precision); } for (int i = s.length(); i < precision; i++) { sb.append('0'); } sb.append(s); if (maxSize < precision) { sb.setLength(maxSize); } return sb.toString(); } }